Grade 7 Unit Plan: Heat and the Environment Grade 7 Unit: Heat and the Environment 2 Introduction Science within the classroom is a phenomenal subject unlike any other. It allows the student to view both objectively and subjectively observable events that based on opinion can seem significant or insignificant. Remarkably, it seems that as we view science all around us and we focus on recreating a lot of the environmental and universal phenomenon through our classroom teaching and demonstrations. A major feat that is constantly being spun about the wheel of change and reform is the innovation of technology and its implications on shaping the framework of the world we live in today. The unit within the grade 7 curriculum to focus on these changes is Heat and the Environment. Every year global warming is getting worst in every part of the world. That we experience here also in Canada. Summer is getting hotter and hotter every year and result a drastic change in our environment. Grade 7 will have a deeper understanding of how heat affects the world and everything on it. The study will be focused in the topics of cause and effect of heat, investigating properties of heat, relate it to geological and meteorological processes, and use their new-found knowledge to design a device to minimize heat transfer. Practical theory will be use for explain some observation. Safety will be one of the concerns of the subject the students will be required to explain safety practices for themselves and other people. This includes the proper handling of hot objects and protecting themselves from heat and objects that are Grade 7 Unit: Heat and the Environment 3 heated. Students will utilize their learning both inside and outside of the classroom; however, safety will be paramount concern throughout all lessons. Heat and the Environment at a Glance: Overall Expectations By the end of Grade 7, students will: Assess the costs and benefits of technologies that reduce heat loss or heatrelated impacts on the environment; Investigate ways in which heat changes substances, and describe how heat is transferred; Demonstrate an understanding of heat as a form of energy that is associated with the movement of particles and is essential to many processes within the Earth’s systems. Specific Expectations By the end of Grade 7, students will: 1.0 - Relating Science and Technology to Society and the Environment 1.1 - Assess the social and environment benefits of technologies that reduce heat loss or transfer 1.2 - Assess the environmental and economical impact using conventional strategies and knowledge. 2.0 - Developing Investigation and Communication Skills 2.1 - Follow established safety productions for using heating appliances and handling hot materials 2.2 - Investigate the effect of heating and cooling on the volume of solid, a liquid and a gas 2.3 - Use technology problem- solving skills to identify ways to minimize heat loss 2.4 - Use scientific inquiry/ experimentation skills to investigate heat transfer through conduction, convection, and radiation. 2.5 - Use appropriate science and technology vocabulary, including heat, temperature, conduction, convection, and radiation, in oral and written communication 2.6 - Use a variety of forms to communicate with different audiences and for a variety of purposes Grade 7 Unit: Heat and the Environment 4 3.0 - Understanding Basic Concepts 3.1 - Use the practice theory to compare how heat affects the motion of practices in a solid, a liquid, and a gas 3.2 - Identify ways in which heat is produced 3.3 - Use the particle theory to explain the effects of heat on volume in solids, liquids, and gases 3.4 - Explain how heat is transmitted through conduction, and describe natural processes that are affected by conduction 3.5 - Explain how heat is transmitted through convection; describe natural processes that depend on convection 3.6 - Explain how heat is transmitted through radiation, describe the effects of radiation from the sun on different kinds surfaces 3.7 - Describe the role of radiation in heating and cooling of the earth, and explain how greenhouse gases effect the transmission of radiated heat through heat atmosphere 3.8 - Identify common sources of greenhouse gases Fundamental Concept Big Idea Energy Heat is a form of energy that can be transformed and transferred. These processes can be explained using the particle theory of matter. (Overall Expectations 2 and 3) Sustainability and Stewardship There are many sources of heat. (Overall expectation 3) Systems and Interactions Heat has both positive and negative effects on the environment. (Overall expectation 1) Scientific Literacy goals As identified within the curriculum expectations, students will engage in a language that includes special terms that are recognized by the field of science and technology. Many of the activities that the students engage in will involve written, oral and visual communication skills. Students in turn will use these skills to describe their inquiries in both formal and informal contexts, and present their findings in oral presentations and written reports. Social goals (Character) Students as they progress through the elementary grades are subjected to more responsibilities within both their learning and extra-curricular Grade 7 Unit: Heat and the Environment 5 activities. Students who are willing to make the effort and are persistent with application and awareness of theoretical knowledge will undoubtedly succeed. This direct relationship becomes inherent upon the following criteria: Students acknowledge the need to learn and obtain new concepts Students recognize and facilitate the need for scientific discovery and it’s analysis Students are able to illicit intrinsic motivational strategies to improve their success with observational patience, attention and encouragement of others’ success. Table Chart for Unit Plan Overview: Lesson Title and Topic Overall Expectation Code(s) for Achievement Lesson Timing and Duration of Concept(s) Lesson Overview and Assessment Criteria Evaluations Based on Connections to the Achievement Chart HEAT CAN CAUSE MATTER TO CHANGE: 1.1 – THE STATES OF MATTER Code 2.5 60 minutes 1.2 – HEAT CAN AFFECT THE VOLME OF LIQUIDS AND GASES Code 2.2 60 minutes 1.3 – HEAT CAN AFFECT THE VOLUME OF SOLIDS Code 3.1 Diagnostic assessment given utilizing the vocabulary terms listed at the end of this document. Students will be given a handout on the states of matter to copy notes and review and informational video outlining the topic. Students will share their observations in a think/pair/share exercise. Inquiry activity using the expansion of water when frozen. Students will look at different substances when subjected to drastic changes in temperature. Investigation links to boiling, hot, cold and freezing temperatures Lab handouts will be given. Definitions and terminology for ELL students can be reviewed 30-60 minutes Online video showing the expansion and contraction of solids. Making connections to building and design when considering construction. Students will do an observational lab with Knowledge and Understanding, Thinking, Application and Communication Thinking and Investigation, Communication Knowledge and Understanding, Communication Grade 7 Unit: Heat and the Environment 6 the burning of candles. They will observe the changes of state occurring. PRACTICAL THEORIES ABOUT MATTER: 2.1 – PARTICLE THEORY Code 3.1 60 minutes 2.2 – VOLUME AND CHANGES OF STATE Code 3.2 60-120 minutes (2 Class periods) Students will identify the purpose of electrons and movement that occurs. Students will perform a movement activity around the classroom simulating expansion and contraction of particles within a substance Students will discover what happens to particles within a substance as they are subjected to different temperatures Brainstorming and Response Journals will be used as assessment pieces. Focus will be made on scientific vocabulary to communicate procedures and ideas. Students will work on creating a concept map or poster for the classroom outlining the changes of state that occur due to heat. Students will work in groups and illustrate the different levels (sublimation, evaporation, condensation…etc.) Students will perform a gallery walk afterwards to view their classmate’s work. Posters will be left up as references for the rest of the year. Science Text (Math Power or other) can be used for reinforcement Knowledge and Understanding, Communication Knowledge and Understanding, Thinking and Investigation Communication HEAT AND ENERGY ON AN OBJECT 3.1 – HEAT & TEMPERATURE Code 1.1 60-80 minutes 3.2 – INVESTIGATING Code 2.2 60 minutes Students will begin to learn the concepts of heat and it’s relationship to temperature. Video will be shown in class (10 minutes) outlining these principles. Students will gather data using thermometers of different temperatures within and around the school for independent study and evaluation. Results will be tabled and students will formulate questions relating to different temperatures. Students will reflect on the particle theory of Knowledge and Understanding, Application Thinking and Investigation, Grade 7 Unit: Heat and the Environment HEAT ENERGY 3.3 – HLDING ONTO HEAT ENERGY Code 2.1 matter and conduct in-class investigations as to where heat is transferred. Students will use the scientific method to predict, observe and identify different temperatures within changes of state and look at this process through a number of different materials (water, alcohol, solids…etc.) Reflections will be done through partnered lab report write-ups and online blog postings of findings. 60 minutes Students will engage in a small role-playing activity whereby they will physically act out being particles within different materials and show the physical characteristics of each material under different states of heat. Students will then be given a short lecture and handouts regarding specific heat capacity of different materials, outlining why different substances retain heat longer than others. Heating a pot on a Bunsen burner as an example (metal holds the heat more than the handle) explain these principles. Specific heat capacity worksheet to be completed using mathematical formulas. Formulas can be reviewed and provided for students on IEP’s on unit test and in future lab work if needed. 7 Communication and Application Thinking and Investigation, Communication and Application TRANSFERING HEAT ENERGY 4.1 – CONDUCTION Code 3.5, 2.4 60 minutes 4.2 – CONVECTION Code 2.5, 3.5 60 minutes Lesson Video and Power-point presentation outlining the three different methods of heat transfer. Students will observe direct energy transfer through conduction by heating water to a boil. Lab experiment in the classroom using different (non-combustible materials). Students will check for energy transfer over time. Data analysis will be done on graph paper. Observational journal entries supporting data will be made as a reflective piece. Students will continue video from previous class outlining convection and it’s principles. Students will be given a critical inquiry as to Knowledge and Understanding, Thinking and Investigation Knowledge and Understanding, Thinking and Investigation, and Grade 7 Unit: Heat and the Environment 4.3 – RADIATION Code 2.5, 3.6 60 minutes 4.4 – HEAT TRANSFER AND THE EARTH Code 1.1, 2.4, 2.6 80-120 minutes (2 Class periods) why we do not burn our hand when we stick it in the over? Question and Answer/Numerical problem Review answers in a group debate forum and review the principles of heat and specific heat capacity of different materials. Students will have and opportunity this class to work on the Gizmo’s website to look at computer simulations regarding radiation. Students will gain a conceptual understanding of what radiation is and reflection on the different kinds of radiation. Compare and contrast questions will be made through computer simulations and journal response entries. Students will use activity to find what substances absorb energy using different colored paint cans. Analysis and discovery will be shared with the class. Case study and scoring rubric will be made on a more macro level involving solar energy and it’s efficiency for home heating. Students will have an opportunity to present their findings to the class in an oral presentation. Computer assistive technology can be implemented where possible. 8 Application Knowledge and Understanding, Thinking and Investigation, Communication Knowledge and Understanding, Thinking and Investigation, Communication and Application HEAT AND OTHER FORMS OF ENERGY 5.1 – NATURAL SOURCES OF HEAT Code 1.2, 3.2 60 minutes Students will analyze the sun and its relationship with the Earth warming and cooling cycles. Outdoor laboratory will give the students the chance using prior knowledge and activation to see who can boil a pot of water using only sunlight and materials that are known to reflect light. Procedures and stipulations of the experiment will be handed out prior to the lab for students to prepare and research information. “Ticket out the door” exercise will be completed following the lab. Students write down what they learned and what they thought would happen. Knowledge and Understanding, Application Grade 7 Unit: Heat and the Environment 5.2 - ENERGY TRANSFORMATION Code 1.1 60 minutes 5.3 – REDUCING LOSS OF HEAT ENERGY Code 1.1, 2.3 60-120 minutes (2 class periods) Students will have a greater understanding that energy is not lost, simply transferred. Video simulating the transfer of energy will be shown 25 minutes. Students will be given written response answers to the video. Students will gain an effective understanding of heat transfer. This will be a continuation from the previous lesson with understanding how heat changes. Students will look at different materials and their specific heat capacities and find a way to develop an insulating device that can be used to keep a certain item cold. Students will use trial and error strategies, activate prior knowledge and use text and Internet sources to help aid in their discovery. Assessment will be concluded by peer review and interview of their materials 9 Knowledge and Understanding, Communication and Application Thinking and Investigation, Communication and Application TECHNOLOGIES THAT USE HEAT ENERGY 6.1 – HEATING SYSTEM TECHNOLOGY Code 3.7 Half Day 6.2 – COST OF RELYING ON HEAT ENERGY Code 1.1, 2.1, 3.8 60 minutes UNIT TEST ALL Students will move to the outdoor classroom to see heating and technology hands on. Trip will be planned for the coal power plant to see different levels of heat transfer. Response journal entries will be made that summarize the trip. Inquiry question will ask students to reflect on current heating and cooling industry practices and how these practices could be improved (ergonomics, cost, material conservation…etc.) Students will make bigger connections to political agendas and global pricing of heat and energy transfer. Computer simulations on the Gizmo website will serve as tools for students to play with maximizing energy while minimizing cost. Greater connections will be made to taxation, delivery and quantity. 60-80 Minutes Knowledge and Understanding, Communication and Application Knowledge and Understanding, Thinking and Investigation, Communication and Application Evaluation Students will be tested on prior knowledge Grade 7 Unit: Heat and the Environment 10 throughout the unit. Additional time may be given for students who are on IEP’s or need additional resource support. Background Knowledge Background Knowledge: What background knowledge is required by students for them to be successful? (Concepts, ideas, events, people). Note the background identified here should be part of Universal Design – important for all students. Concepts and Terminology that is Important for Student Knowledge and Success 1. Accurate information regarding heat and energy systems 2. Use of previous knowledge and memory recall of science units 3. Awareness of the three states of matter and change of state 4. Interrelationships of heat and sustainability of plant and animal life 5. Changes in state due to weather and man-made environments 6. Resources available to a particular geographical region 7. Design and implications of the technology 8. Using the RAFT technique for point of view analysis 9. Additional information regarding conduction, convection and radiation 10. Specific heat capacities of different materials and elements 11. Expansion and contraction of materials in relation to heat and energy transfer Differentiation: How can students access the background they will need in different ways? Accommodations and Modifications: - Should be noted that accommodations are reflective of the IEP’s, which are under review or have been identified by the IPRC: Instructional Accommodations – Changes in teaching strategies, styles of presentation, methods of organization, or use of technology: - Use of visual aids including videos, manipulatives and documentaries - Presentation of information and ideas can be in written text format, oral report, presentation or debate structure - Scribe can assist students with motor control issues - Information sheets and handouts for additional resources should be given, prior to class for students to review Grade 7 Unit: Heat and the Environment - 11 Technological software aids to supplement different learning pathways learning pathways in addition to aiding motor control issues Ability to work within groups and collaborate ideas with peers to gain greater understanding Peer feedback and critique to be given after debates, inquiry lessons and labs to facilitate thought provoking content and information towards greater academic success. Environmental Accommodations – Changes that the student may require in the classroom and/or school environment: - Increased/decreased lighting atmosphere (power point presentations reflect quite often light from the outside. - Change of seating for students that are disruptive or require an environment void of noise and distraction - Bring student closer or further from media devices - Use of different temperature controls to make the environment more suitable for the learner. Temperature in older schools especially becomes warm during the fall and spring months. This is a good way to engage the students in the unit as well, by identifying the different temperatures within the school classrooms. Assessment Accommodations – Changes in assessment protocols and procedures that enable a student to demonstrate his or her learning: - Additional time for completion of assignments and tests - Differentiated instruction (should be implicit for all learning within the classroom) - Choice of media presentation for debates and concept attainment Literacy Supports: What literacy strategies would be most appropriate to support students in accessing the requisite background knowledge? - Data charts, posters, mind mapping Use of Venn diagrams to see overlap of technologies Compare and contrast charts (Student made and teacher resource) Critical Thinking Vocabulary Terms relating to thinking need to be unpacked with the students in order for them to understand experimentation within the unit on heat and energy and respond appropriately? Critical Thinking Vocabulary - Technologies, information - Analysis, Analyze, data - Compare and contrast - Logical Grade 7 Unit: Heat and the Environment - Convection, Conduction, Radiation - References - Significance, Statistical, Relevance 12 - Critical Inquiry - Environmental (macro, micro) - Capacity, transferring Tools - Students will use the reference textbook of Science Power 7 Students will be required to have access to the following items: 1. Science Lab Report Folders 2. Pens and pencils and other writing instruments 3. Computer access 4. Science Text - Teachers will use the textbook as a reference guide for all materials Photocopier or RISO for materials and student resources to be made by teacher and supplied before the class. Grade 7 Unit: Heat and the Environment 13 Culminating Task Overview: Throughout the unit of Heat and the Environment, students have been working on a number of different concepts including the movement of particles when given energy, understanding the states of matter when heat is applied and the transfer of energy through the methods of convection, conduction and radiation. As a culminating task it is challenging to try to encompass all of these elements. However, the task chosen will reflect upon the greater understanding and implications of these principles on the world at large and practical application scenarios. The following will look at both environmental impact on waste and material consumption in addition to the viability of maintaining heat, minimizing loss to the environment. As I’m sure many teachers' can attest to, caffeine is a very large component of the morning routine in the form of coffee and tea. The students will be required in this task to design and develop a new coffee mug that will be able to hold a hot liquid to the best of the materials ability without causing heat transfer to the hand holding the mug or escaping to the surrounding environment. Environmentally, this will serve as a method of eliminating undue waste from multinational corporate products such as McDonalds, Starbucks, Tim Horton’s…etc. Although most companies have taken recycling initiatives, the process is lengthy and financially consuming. Thus, the benefit of undertaking this culminating task will not only increase student awareness of global environmental and economic issues, but also reinforce concepts relating to thermal design, heat transfer and specific heat capacities of different materials. The students will be assessed on their ability to recall and reinforce concepts attained throughout the unit. In addition, application questions will provoke further thinking by asking the students to understand the economic feasibility of reproducing their mug on a greater industrial scale for consumer purchasing and reflect upon these practices. Furthermore, understanding the concept of Grade 7 Unit: Heat and the Environment 14 energy transfer through to the Earth by means of waste production will be reinforced in cross-curricular areas of biology and ecological sustainability. These subjects will be revisited later on in the science curriculum. Curriculum Expectations: OVERALL EXPECTATIONS By the end of Grade 7, students will: 1. Assess the costs and benefits of technologies that reduce heat loss or heat-related impacts on the environment; 2. Investigate ways in which heat changes substances, and describe how heat is transferred; 3. Demonstrate an understanding of heat as a form of energy that is associated with the movement of particles and is essential to many processes within the earth’s systems. SPECIFIC EXPECTATIONS 2.5 use a variety of forms (e.g., oral, written, graphic, multimedia) to communicate with different audiences and for a variety of purposes (e.g., design a multimedia presentation explaining the interrelationships between biotic and abiotic components in a specific ecosystem) 3.5 describe how matter is cycled within the environment and explain how it promotes sustain- ability (e.g., bears carry salmon into the forest, where the remains decompose and add nutrients to the soil, thus supporting plant growth; through crop rotation, nutrients for future crops are created from the decomposition of the waste matter of previous crops) 3.8 describe ways in which human activities and technologies alter balances and interactions in the environment (e.g., clear-cutting a forest, overusing motorized water vehicles, managing wolf-killings in Yukon) 1.1 assess the social and environmental benefits of technologies that reduce heat loss or transfer (e.g., insulated clothing, building insulation, green roofs, energy-efficient buildings) 2.1 follow established safety procedures for using heating appliances and handling hot materials (e.g., use protective gloves when removing items from hot plates) 2.4 use scientific inquiry/experimentation skills (see page 12) to investigate heat transfer through conduction, convection, and radiation Grade 7 Unit: Heat and the Environment 15 2.5 use appropriate science and technology vocabulary, including heat, temperature, conduction, convection, and radiation, in oral and written communication 2.6 use a variety of forms (e.g., oral, written, graphic, multimedia) to communicate with different audiences and for a variety of purposes (e.g., using the conventions of science, create a labeled diagram to illustrate convection in a liquid or a gas) 3.3 use the particle theory to explain the effects of heat on volume in solids (e.g., rails, sidewalks, and bridge segments expand in hot weather), liquids (e.g., sea levels are rising partly because global warming is making the oceans warmer and the water in them is expanding), and gases (e.g., the air in car tires expands on hot pavement) 3.4 explain how heat is transmitted through conduction (e.g., the transmission of heat from a stove burner to a pot and from the pot to the pot handle), and describe natural processes that are affected by conduction (e.g., the formation of igneous and metamorphic rocks and diamonds) Required Materials: For this experiment, the instructor should supply as many materials as possible to alleviate student time searching for resources and focus on the primary goal of completing the assignment. Students are welcome to add or supplement materials they hypothesize will yield better results. The following should be provided: A number of mugs of various materials (ceramic, glass, Styrofoam…etc) Materials to be used as insulators (cloth of different makes (polyester, cotton, nylon, fur)) Tape, scissors, glue and other craft material necessary Kettle to boil water Water outlet Thermometers Stopwatch (used to record the time of maintaining heat within the mug) Students are required to have: Lab handouts with culminating activity procedures Pens, pencils and other writing instruments Extra paper for data recording Teacher Guide for Procedures: The culminating task may take 3-4 class periods depending on length of time allotted on that particular day of study. Students should first work on developing their design of the mug and thinking of the resources they which to use for their experiment. Secondly, the Grade 7 Unit: Heat and the Environment 16 students will move to the design and implementation phase where they will build the mug. Finally, students will assess their work and analyze the data collected from the experiment. Conclusions will be drawn and submitted for assessment purposes. The students will work on the project in the following procedural steps to maximize efficiency and productivity: Step #1 Students will be given the handout stating their objective. They will work in partners or groups of three to enhance collaborative efforts and increase socialization within the assignment. Step #2 Students will use one class period to come up with a design for their mug with a writeup explaining their methodology and reasoning for the materials used and design of the m mug. The reasoning will be based from prior lessons in the classroom, information from field trips, notes and other texts supplementing the subject area. Step #3 Once designed and built, the mug will undergo stress tests using hot water to test for heat transfer to the environment around it. Pouring the hot water into the mugs and checking the temperature of the water within them over a period of calculated time intervals will do this. Students will observe, record the data and calculate their conclusions and errors. Step #4 Students will then present their mug and findings to the rest of the class in an oral presentation using a form of multimedia, prezi, power point, Google doc…etc. to illustrate their findings and correlations to other products on the market currently. Step #5 If time permits, students can use additional class time to work artistically on their project and make it more marketable to the consumer if they have not already done so. Prior Knowledge: Grade 7 Unit: Heat and the Environment 17 As this is a culminating task, the students should have obtained a satisfactory level of knowledge throughout the unit. Such concepts include: The particle theory and the changes in state that occur through the transfer of heat and energy Transmission of energy by convection, conduction and radiation Purposes of insulation and the properties of different materials Specific heat capacities of different materials Understanding how to perform a lab minimizing bias (controlled variables, methodology, data recording and observation) Accommodations and Modifications: Modifications to students on IEP’s can be made specific as identified within their documents. Use of visual aids including videos, manipulatives and documentaries Presentation of culminating task can be given with visual aids on the overhead to assist understanding of the handouts given Scribe can assist students with motor control issues Information sheets and handouts for additional resources should be given, prior to class for students to review Peer feedback and critique to be given after the oral presentations to highlight elements of success Change of seating for students that are disruptive or require an environment void of noise and distraction. Lab work and design of the mugs can be done outside the classroom. Bring student closer or further from media devices for better focus and attention Additional time for completion of the assignment Students can be placed in ability to grouping to increase self-efficacy and perceived ability for success Student Safety: There are a number of inherent safety concerns for this lab experiment. The following precautions should be maintained and understood at all times before/during and after the lab is completed: Students need to have a signed safety form along with a signature from their parent or guardian in relation to the lab. Students will be working with water, which is a hazard for slipping if spilled onto the floor. Precautions will be taken to ensure that they will not run in the classroom. The water will be boiling so there is a chance of burning. Students will be advised before the lab begins on the procedure of how to handle burns and that the teacher should be notified immediately. Grade 7 Unit: Heat and the Environment 18 Students will be working with scissors and other tools for development of their mug. These tools possess a risk for cuts and scrapes. A first aid kit will be present in the classroom at all times and students will be familiarized with its location and contents. Students are to advise the teacher immediately if there are any incidents that occur within the classroom, no matter how minor. Records should be maintained of any injuries and constant communication be maintained with the appropriate students body, parents and office staff. Assessment Tools: Assessment will be broken down into a number of different areas and weighted accordingly: Diagram and Procedure Write-Up of Mug - 25% Data Recording and Observations - 25% Oral Presentation - 25% Use of Multimedia for presentation - 10% Final document outlining environmental issues - 15% Total: - 100% Assessment Rubric: KNOWLEDGE AND UNDERSTANDING Student is able to accurately display information relating to the particle theory of matter Students addresses the issue of heat transfer through means of convection and conduction THINKING AND INVESTIGATION Student uses appropriate materials with regard to safety procedures LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4 The student, with some teacher prompting and assistance is able to provided a limited outline of the particle theory and the means of heat transfer through their experimental design The student is partially able to identify the primary components of the particle theory and explains heat transfer with some effectiveness through experimental design The student is able to effectively able to state connections to the particle theory and demonstrates heat transfer effectively through experimental design The student is able to completely identify all components of the particle theory and their interrelationship to heat transfer. The student masterfully develops proper experimental design and illustrates these principles with great competence. Follows lab and safety procedures with limited effectiveness Follows lab and safety procedures with some effectiveness Follows lab and safety procedures effectively Follows lab and safety procedures with considerable effectiveness Grade 7 Unit: Heat and the Environment Student is able to formulate a hypothesis and procedure relating to the experiment and carry it through. Observations are noted with reference to design success and flaws COMMUNICATION Student is able to convey ideas using scientific terminology Student is able to orally articulate their argument and procedure with creativity and originality Student is able to cultivate a sustainable design and procedure with limited effectiveness Student is able to cultivate a sustainable design and procedure with some effectiveness Student is able to cultivate a sustainable design and procedure with effectiveness Student is able to cultivate a sustainable design and procedure with considerable effectiveness Student completes testing and data analysis with limited effectiveness and with a number of errors and omissions The student, with teacher assistance, provides limited details through the oral presentation including clarity of voice, projection and physical demeanor Student completes testing and data analysis with some effectiveness with some errors and omissions The student is partially able to provide details of their experiment with some errors and/or omissions using adequate clarity of voice, projection and physical demeanor The student uses adequate scientific vocabulary Student completes testing and data analysis with considerable effectiveness with no errors and omissions The student is able to masterfully provide details of their experiment with no errors or omissions. Student uses exceptional clarity of voice, projection and physical demeanor The student is able to show some connections to economic awareness and ergonomics Student completes testing and data analysis with strong effectiveness with limited errors and omissions The student is able to effectively provide details of their experiment with limited errors or omissions using clarity of voice, projection and proper physical demeanor The student often and effectively uses scientific terminology The student is able to show effective connections to economic awareness and ergonomics Student is able to form some connections to environmental impact and sustainability Student is able to form some connections to environmental impact and sustainability Student is able to form considerable connections to environmental impact and sustainability The student uses limited scientific vocabulary APPLICATION Student is able to reflect on their design in regards to ergonomics and cost effectiveness Student is able to articulate ecological impact of currently used materials and draw conclusions from the newly designed mug 19 Student is able to show limited connections to economic awareness and ergonomics Student is able to form limited connections to environmental impact and sustainability The student frequently uses exceptional scientific terminology The student is able to show considerable connections to economic awareness and ergonomics Grade 7 Unit: Heat and the Environment 20 Student Handout Many of your instructors are finding it difficult to maintain the temperature of their beverage in the morning. Using what we know of heat and the environment, work in groups of 2-3 people to design a new mug for your teacher to use that will best hold the temperature of the beverage. Use any materials provided by the instructor. Title of Project - __________________________________________________________________ Group Members - _________________________________________________________________ Problem/Objective ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Hypothesis ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Testing Variables ________________________________________________________________________________ ________________________________________________________________________________ Grade 7 Unit: Heat and the Environment 21 ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Materials: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Procedure – ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Grade 7 Unit: Heat and the Environment 22 ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Design – Below, draw your mug. Be sure to label all materials being used. Underneath your design, state your rationale for the materials. Be sure to reference what we have review so far throughout the unit. Evidence/Rationale ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Grade 7 Unit: Heat and the Environment 23 ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Data Collection and Observation: Using the kettle and hot water test your design. Choose your time increments for your heat measurements over a 30 minute period. Use the table below to graph your results (Be sure to label all axis): Grade 7 Unit: Heat and the Environment 24 Results and Conclusion: State the results of your experiment. Was your hypothesis correct? Explain? ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Application: Cost analysis of product ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ Grade 7 Unit: Heat and the Environment 25 ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ References: Bosack, S.V. (2000). Science Is. A source book of fascinating facts, projects and activities. Scholastic Canada Ltd, pg 62-63. Ontario Ministry of Education (2010). Growing Success: Assessment, Evaluation and Reporting in Ontario Schools, First Edition. Queen’s Printer for Ontario. Ontario Ministry of Education (2008). The Ontario Curriculum Grades 1-8 Science. Purdue University GK-12 Program. (2006-07). Travel mug design activity. Retrieved July 16, 2012, from http://www.purdue.edu/dp/gk12/downloads/Travel-Mug.pdf Grade 7 Unit: Heat and the Environment 26 Unit Test Overview: After thorough studying the unit of Heat and the Environment, students will be assess through a written test that will measure what they understand and how will they apply it in their daily living. The students will answer questions from the topics about the causes of heat changes in solids, liquids and gases. They will also impart the important role of heat in nature. And heat technologies offer benefits but require proper use so it will not cause bad effect in the environment. Curriculum Expectations: OVERALL EXPECTATIONS By the end of Grade 7, students will: 1. Assess the costs and benefits of technologies that reduce heat loss or heat-related impacts on the environment; 2. Investigate ways in which heat changes substances, and describe how heat is transferred; 3. Demonstrate an understanding of heat as a form of energy that is associated with the movement of particles and is essential to many processes within the earth’s systems. SPECIFIC EXPECTATIONS 1.1 assess the social and environmental benefits of technologies that reduce heat loss or transfer (e.g., insulated clothing, building insulation, green roofs, energyefficient buildings) Sample guiding questions: (a) Insulated clothing protects our bodies and increases our ability to enjoy outdoor activities in winter. What science and technology concepts are at work in coats designed for use in cold weather? Who might be interested in such designs? (b) A wellinsulated home is more comfortable and costs less to heat. Reducing heat loss saves energy, and saving energy reduces the environmental impact of energy production. What are some areas of your home where heat might be lost? How can this heat loss be counteracted? What are the benefits of doing so? (c) Green roofs save on heating and cooling costs and reduce the amount of insulation that is needed. But they have not gained wide acceptance in Ontario. What might be some deterrents to having a green roof? How might these deterrents be overcome? (d) Energy-efficient buildings are extremely airtight compared to conventionally constructed buildings. This minimizes the amount of Grade 7 Unit: Heat and the Environment 27 warm (or cool) air that can pass through the structure. What are some of thedisadvantages to having airtight buildings (e.g., lack of fresh air, moisture buildup)? How can these problems be solved (e.g., through mechanical ventilation systems with heat recovery and humidity control), and how effective are the solutions? 1.2 assess the environmental and economic impacts of using conventional (e.g., fossil fuel, nuclear) and alternative forms of energy (e.g., geothermal, solar, wind, wave, biofuel) Sample issues: (a) Your family is building a new home. Present a case for installing a geothermal heat pump. In your discussion, be sure to include the benefits and costs from both an environmental perspective and an economic perspective. (b) Make a case for (or against) using rural land or marginal land-use areas for wind turbine farms.. 2.1 follow established safety procedures for using heating appliances and handling hot materials (e.g., use protective gloves when removing items from hot plates) 2.2 investigate the effects of heating and cooling on the volume of a solid, a liquid, and a gas 2.3 use technological problem-solving skills (see page 16) to identify ways to minimize heat loss Sample problem: Use the materials provided to create a product (e.g., a model of a piece of winter clothing, a model of a wet suit, a model travel mug for a hot beverage or food item) that will minimize heat loss 2.4 use scientific inquiry/experimentation skills (see page 12) to investigate heat transfer through conduction, convection, and radiation Sample problem (conduction): After letting spoons made of different materials sit partially submerged in a container of hot water, measure the temperature of the parts sticking out of the water. What conclusions can you draw from your findings? 2.5 use appropriate science and technology vocabulary, including heat, temperature, conduction, convection, and radiation, in oral and written communication 2.6 use a variety of forms (e.g., oral, written, graphic,multimedia) to communicate with different audiences and for a variety of purposes (e.g., using the conventions of science, create a labelled diagram to illustrate convection in a liquid or a gas) 3.1 use the particle theory to compare how heat affects the motion of particles in a solid, a liquid, and a gas 3.2 identify ways in which heat is produced (e.g., burning fossil and renewable fuels, Grade 7 Unit: Heat and the Environment 28 electrical resistance, physical activity)2. Developing Investigation aommunication Skill1. Relating Science and Technolog 3.3 use the particle theory to explain the effects of heat on volume in solids (e.g., rails, sidewalks, and bridge segments expand in hot weather), liquids (e.g., sea levels are rising partly because global warming is making the oceans warmer and the water in them is expanding), and gases (e.g., the air in car tires expands on hot pavement) 3.4 explain how heat is transmitted through conduction (e.g., the transmission of heat from a stove burner to a pot and from the pot to the pothandle), and describe natural processes that are affected by conduction (e.g., the formation of igneous and metamorphic rocks and diamonds) 3.5 explain how heat is transmitted through convection, and describe natural processes that depend on convection (e.g., thunderstorms, land and sea breezes) 3.6 explain how heat is transmitted through radiation, and describe the effects of radiation from the sun on different kinds of surfaces (e.g., an ice-covered lake, a forest, an ocean, an asphalt road) 3.7 describe the role of radiation in heating and cooling the earth, and explain how greenhouse gases affect the transmission of radiated heat through the atmosphere (e.g.,The earth is warmed by absorbing radiation from the sun. It cools by radiating thermal energy back to space. Greenhouse gases absorb some of the radiation that the earth emits to space and reradiate it back to the earth’s surface. If the quantity of greenhouse gases in the atmosphere increases, they absorb more outgoing radiation, and the earth becomes warmer.) 3.8 identify common sources of greenhouse gases (e.g., carbon dioxide comes from plant and animal respiration and the burning of fossil fuels; methane comes from wetlands, grazing livestock, termites, fossil fuel extraction, and landfills; nitrous oxide comes from soils and nitrogen fertilizers), and describe ways of reducing emissions Required Time 75 minutes: Number of Items 50 Assessment Tools: Assessment will be broken down into two parts: Knowledge and Understanding - 50% Grade 7 Unit: Heat and the Environment 29 Application - 50% Total: - 100% Test Questions I. Multiple Choice: Choose the best answer for the following questions and write your answer in the space provided before the numbers. _____1. When we boil water we are transferring energy to all particles of the water and _________ the total energy of the water. [K] a. b. c. d. increase decrease mixed evaporate _____2. What is the major source of greenhouse gas here in Canada? [K] a. b. c. d. Transportation Industry Commercial and Residential Heating Agriculture _____3. As you hold a cup of ice cream, heat transfers from your hand to the surface of the ice cream touching the cup. What type of heat transfer does this describe? Ans. [K] a. b. c. d. radiation conduction convection convention _____4. Materials or devices to inhibit or prevent the conduction of heat [K] a. b. c. d. thermal radiation convention insulator _____5. When invisible waves or infrared waves of radiant energy come with contact with a solid, the particles in the solid vibrates _______. [K] a. b. c. d. faster slower higher lower Grade 7 Unit: Heat and the Environment 30 II. Identification: Identify the following words that best describe by the following statements and write your answer in the space provided before the number. Choose the best answer that correspond the statements or question from the word bank. _______________1. A gas turning into a solid (condensation) [K] _______________2. The blanket of gases that surrounds the earth (Atmosphere) [K] _______________ 3. The stored energy at the central of particles of matter (Nuclear Energy) [K] _______________ 4. Is a theory that explains the behavior of solids, liquids and gases (Particle theory of matter) [K] _______________ 5. A change from liquid to gas (evaporation) [K] _______________ 6. The transfer of heat through a solid to another solid, a liquid, or a gas that is in contact with it (Conduction) [K] _______________ 7. The transfer of thermal energy by moving particles within a fluid (Convection). [K] ______________8. The movement in the nature of water from the surface of Earth and back (water cycle) [K] ______________ 9. Any device that transforms energy from one form to another (Energy Converter). [K] _____________10. Scientific data includes that Earth’s climate has become warmer over the past hundred years. This worldwide average increase in temperature of earth atmosphere is called? (global warming). [K] Word Bank Energy Converter Particle theory of matter Conduction Water Cycle Condensation Global Warming Convection Atmosphere Nuclear Energy Heat Evaporation III. Enumeration: Enumerate the following answer to given questions. Follow the given instructions in each question. 1-3 What are the three forms of energy that you use often and give examples of each [A] Grade 7 Unit: Heat and the Environment 31 1. 2. 3. 4-6 What are the three types of energy transfer and provide example of each ? [ K] 4. 5. 6. 7-8 What are two human activities that produce CO2 [A] ? 7. 8. 9-10 What are the two sources of heat that we use in our daily activities and give example of each? [K] 9. 10. IV. Answer the following questions in paragraph form. 1. After studying this unit about heat in the environment what are the things that you have done to help lessen the use of carbon dioxide? (5pts) [A] 2. What are the importance’s of heat in our lives? (3 pts) [A] 3. Explain why we need to protect our hands and use pot holders when holding a hot pot or any heated materials. (2 pts) [A] Grade 7 Unit: Heat and the Environment 32 4. Explain the effect of using too much carbon dioxide in our environment. (5pts) [A] V. Draw diagrams 1. Choose two from the following cycles of change and draw a diagram for each cycles. A.) solid to liquid, liquid to solid, B.) liquid to gas, gas to liquid, C.) gas to solid and solid to gas. Include the right process of change. (10 pts) [K] Grade 7 Unit: Heat and the Environment Test Answers I. Multiple Choice (5 pts) 1. A 2. B 3. B 4. D 5. A II. Identification (10 pts) 1. Condensation 2. Atmosphere 3. Nuclear Energy 4. Particle theory of matter 5. Evaporation 6. Conduction 7. Convection 8. Water cycle 9. Energy converter 10. Global Warming III. Enumeration 1-3 What are the three forms of energy that you use often and give examples of each? [A] 1. (Chemical energy/ Mechanical) transportations- cars, bus, trains, plane 2. (Electrical energy) electricity- home appliances, phones 3. ( Light energy) – sun, light bulb, flash light 4-6 What are the three energy transfers and provide example of each? [ K] 4. Conduction - pot heated from the stove, spoon placed in a hot water, 5. Convection - hot air balloon, wind current, warm water in the pool, 6. Radiation – solar power, a light bulb, camp fire, microwave oven 7-8 What are two human activities that produce CO2? [A] 7. Driving your car 8. Heating and cooling of your house 9-10 What are the two sources of heat that we use in our daily activities and give example of each? [K] 9. Fossil Fuels or non renewable energy resources ex. - coal, oil, natural gas 33 Grade 7 Unit: Heat and the Environment 34 10. Renewable Energy Source ex. – suns energy, wind, and flowing water IV. Paragraph Answer 1. After studying this unit about heat in the environment what are the things that you have done to help lessen the use of carbon dioxide? (5pts) [A] Possible answers - walk or use bicycle instead of driving - lessen the use of cooling heating the house - turn off the light when not in use - buy products that are carbon safe free -recycling 2. What are the importances of heat in our lives? (3 pts) [A] Heat helps us in our daily living. Heat and cook our food, heat our house when it’s cold, give us light, help industrial businesses, helps the transportation and electricity to work. 3. Explain why we need to protect our hands and use pot holders when holding a hot pot or any heated materials. (2 pts) [A] We need to protect our hand in holding hot object because of the heat transfer that we can feel. Heat can be transfer from a hot object by means of conduction of heat to our hand and can cause burn or injuries. 4. Explain the effect of using too much carbon dioxide in our environment. (5pts) [A] Too much of production of carbon dioxide can cause harm to our environment it destroy the layer of the atmosphere that help us in getting too much UV rays that can damage our skin. It is one of the major factors that cause global warming. Grade 7 Unit: Heat and the Environment 35 V. Draw A Diagram. 2. Choose two from the following cycles of change and draw a diagram for each cycles. A.) solid to liquid, liquid to solid, B.) liquid to gas, gas to liquid, C.) gas to solid and solid to gas. Include the right process of change. (10 pts) [K] A.) solid to liquid, liquid to solid Melting Liquid Solid Freezing B.) liquid to gas, gas to liquid Liquid Evaporatio n Gas Condensatio n C.) gas to solid and solid to gas Gas Sublimation Deposition Solid Grade 7 Unit: Heat and the Environment 36 Resources Ontario Ministry of Education (2008). The Ontario Curriculum Grades 1-8 Science. Reid M. (2009). Investigating Science 7. Canada