What’s Up? Clouds and Your Weather – Grade Seven Ohio Standards Connection: Earth and Space Sciences Benchmark C Describe interactions of matter and energy throughout the lithosphere, hydrosphere and atmosphere (e.g. water cycle, weather and pollution). Indicator 5 Make simple weather predictions based on the changing cloud types associated with frontal systems. Scientific Inquiry Benchmark B Analyze and interpret data from scientific investigations using appropriate mathematical skills in order to draw valid conclusions. Indicator 5 Analyze alternative scientific explanations and predictions, and recognize that there may be more than one good way to interpret a given set of data. Lesson Summary: This lesson will help students learn to identify clouds and the weather associated with them. Students will use informational articles and personal weather observations to learn about the relationships between weather fronts and clouds. Student groups will then design their own weather maps and make weather predictions for areas on their maps. Students will demonstrate their learning in a postassessment that challenges them to draw weather fronts, and draw and describe the types of clouds and weather conditions they would expect to see. Estimated Duration: Three hours Commentary: This lesson is divided into three sections. The first section teaches students about cloud types and weather fronts and refreshes weather observation skills that were learned in earlier grades. In the second part of the lesson, students record a series of weather observations over several days. In the third section, students integrate information about clouds and their weather observations to create and analyze weather maps. Combining real-life observations with classroom learning helps students process and learn about weather. Pre-Assessment: Distribute Attachment A, Pre-Assessment to students and take them outside on a day that has clouds. Instructional Tip: Students need to be reminded to not look at the sun. Address any other safety concerns associated with the particular outdoor area. Divide students into groups, and distribute a cloud chart or a cloud key to each. Tell students that they should draw a section of sky that has some cloud coverage, being as careful of details as they can. Have student groups decide what type of cloud they see. Restrict cloud types to cirrus, stratus, altocumulus, cumulus, cumulonimbus, and nimbostratus. 1 What’s Up? Clouds and Your Weather – Grade Seven Ohio Standards Connection: Related Benchmark Benchmark B Analyze and interpret data from scientific investigations using appropriate mathematical skills in order to draw valid conclusions. Indicator 6 Identify faulty reasoning and statements that go beyond the evidence or misinterpret the evidence. Instructional Tip: Obtain cloud charts from several Web sites or from commercial dealers. For example, access the Web site maintained by the National Aeronautics and Space Administration or the site maintained by the National Oceanic and Atmospheric Administration. Ask students to predict what the weather will be like later that day or the next day. Check work together, explaining that even experts sometimes have trouble identifying clouds. Extend the discussion by asking students if anyone saw more than one type of cloud in the same part of the sky. Scoring Guidelines: Check students' abilities to identify clouds, explain their choice and predict weather based on cloud type. Use this information to guide instruction. Post-Assessment: Provide students with information on weather fronts and have them use the information to explain types of clouds and the weather associated. See Attachment B, Post-Assessment. Scoring Guidelines: Use Attachment C, Post-Assessment Answers to score student work. Instructional Procedures: 1. After the Pre-Assessment organize the class into groups of three or four students each. 2. Distribute Attachment D, Daily Record Sheet to each student. Take groups outside to record cloud data for five to 10 minutes each day, for at least five days. Tell students they may help each other determine cloud types and conditions. 3. Inside the classroom, have students sit in their groups. Give copies of Attachment E, Worksheet to students. Also distribute an informational article or assign a section of an earth science text that describes, and shows diagrams of, frontal systems. 4. Tell students to complete Attachment E, Worksheet using the text or weather articles that you distributed. 5. Use Attachment F, Worksheet Answers to guide a discussion with students about the answers to their worksheet. Discuss the answers to clarify any misconceptions. 6. Provide examples of weather maps, and show them on the overhead projector. Emphasize fronts, cloud types and weather conditions. Show students how warm fronts and cold fronts are displayed on a weather map. 2 What’s Up? Clouds and Your Weather – Grade Seven 7. Describe the difference between a warm front and a cold front. Use side-view drawings of the fronts to show how cold fronts wedge under warm air and warm fronts ride over cold air masses. Also address the different kinds of clouds and precipitation associated with these fronts. Help students understand why low pressure fronts are often called warm fronts and high pressure fronts are often called cold fronts. 8. Integrate student observations of weather that they recorded on Attachment D, Daily Record Sheet into the discussion. Have students predict what type of front was involved in the weather they had observed and discuss their predictions. 9. Explain that students will now create their own weather maps. 10. Tell students to work in their groups. Copy and distribute a black-line master of the United States to each group. Have them choose group names or numbers to match maps with the groups. 11. Explain that they should use the map handout to create a fictional weather map, showing conditions that might actually occur. Other student groups will try to make weather predictions based on their maps. 12. Put the following directions on the board so students will know what essential information they need to include on their maps. Record your group map number or name on the top of the map. Choose a general location (East Coast, Midwest, West, Southwest, etc.) Draw at least one front moving toward the area, within the area, or having passed through. Label at least three temperatures ahead of the front and three behind. Instructional Tip: Bring in weather maps from the local paper or the Internet to provide ideas for students. They also provide actual forecast information which students can compare to their own predictions. 13. Collect maps from students and make overhead transparencies to display in class. Transparencies are not essential but will be convenient for comparing information among student groups. 14. Give copies of Attachment G, Map Exchange Worksheet to students. 15. Ask groups to pass their maps to other groups so they can describe what they see and make a weather prediction. Tell students to enter their descriptions and predictions on Attachment G, Map Exchange Worksheet. Tell students to continue passing maps around the room until every group has completed their data sheets. 16. After each group has completed all maps, show maps on the overhead and have students share their predictions. Discuss any problems with the data provided on the maps and how groups used the information provided to make valid predictions. 17. Review information with the class before the post-assessment to clear up any questions and help focus students on key points, such as making weather predictions based on cloud types associated with frontal systems. 18. Proceed to the Post-Assessment. 3 What’s Up? Clouds and Your Weather – Grade Seven Differentiated Instructional Support: Instruction is differentiated according to learner needs, to help all learners either meet the intent of the specified indicator(s) or, if the indicator is already met, to advance beyond the specified indicator(s). Draw or copy pictures of clouds on the Post-Assessment to give students a visual clue to the correct answer. Use colors as well as symbols on weather maps to provide more information. Extension: Encourage students to keep track of the path of a hurricane. Have students use maps to determine where fronts form and track them as they pass through Ohio. Have students identify where the fronts dissipate. Encourage students to watch national and international weather on television, the Internet or in the newspaper. Homework Options and Home Connections: Have students watch television weather forecasts with their parents. Discuss whether they think the weatherman or woman made a realistic or correct forecast. Encourage students to keep a weather journal describing weather and its effect on them and their families or other people experiencing the weather phenomena. Materials and Resources: The inclusion of a specific resource in any lesson formulated by the Ohio Department of Education should not be interpreted as an endorsement of that particular resource, or any of its contents, by the Ohio Department of Education. The Ohio Department of Education does not endorse any particular resource. The Web addresses listed are for a given site’s main page, therefore, it may be necessary to search within that site to find the specific information required for a given lesson. Please note that information published on the Internet changes over time, therefore the links provided may no longer contain the specific information related to a given lesson. Teachers are advised to preview all sites before using them with students. For the teacher: Cloud charts, weather maps, blank overhead transparencies, overhead pens. For the students: Cloud charts, blank United States map, weather maps, blank overhead transparencies, overhead pens. Vocabulary: front (warm, cold, occluded, stationary) cumulus stratus altocumulus cirrus nimbostratus 4 What’s Up? Clouds and Your Weather – Grade Seven cumulonimbus prediction altitude transition Technology Connections: Use national and local television broadcasts of daily weather and weather warnings. Access weather data, observations and news on the Internet. See the National Oceanic and Atmospheric Administration web site at http://www.noaa.gov and the National Aeronautics and Space Administration at http://www.larc.nasa.gov. Research Connections: Daniels, H. and Bizar. Methods that Matter: Six Structures for Best Practice Classrooms, Portland ME: Steinhouse Publishers, 1998. Authentic experiences help students develop real-world knowledge and skills and apply their learning in ways that prepare them for their careers and lives beyond school. Marzano, R. et al. Classroom Instruction that Works: Research-Based Strategies for Increasing Student Achievement. Alexandria Va.: Association for Supervision and Curriculum Development, 2001. Identifying similarities and differences enhances students’ understanding of and ability to use knowledge. This process includes comparing, classifying, creating metaphors and creating analogies and may involve the following: Presenting students with explicit guidance in identifying similarities and differences; Asking students to independently identify similarities and differences; Representing similarities and differences in graphic or symbolic form. General Tips: Omit or only briefly mention occluded fronts, which will be difficult for students to understand. Occluded fronts occur when one front overtakes another, and there is mixing of the layers of air. Attachments: Attachment A, Pre-Assessment Attachment B, Post-Assessment Attachment C, Post-Assessment Answers Attachment D, Daily Record Sheet Attachment E, Worksheet Attachment F, Worksheet Answers Attachment G, Map Exchange Worksheet 5 What’s Up? Clouds and Your Weather – Grade Seven Attachment A Pre-Assessment Directions: Draw a picture of the clouds in one section of the sky. Make sure you include as many details as you can. Tell how the clouds are moving (speed, direction, altitude). When you have finished your drawing, compare it with others in your group. Add details if you think you missed anything. Directions: Use the information about clouds shown below to classify the type or types of clouds that you observed. Answer the questions that follow based on this information. Low altitude clouds Stratus: Layered look, may be somewhat puffy or completely flat, usually reach down to the horizon, could mean rain or drizzle. Middle altitude clouds: Cumulus: Puffy clouds look like shapes; usually nice weather, but may change into cumulonimbus. Altocumulus: Look like layers of cotton balls with dark gray bottoms, often mean rain or snow. High altitude clouds: Cirrus: Very high, wispy clouds; look like feathers; indicate that a weather front is moving in, tell you that there is going to be a change in the weather. Storm clouds: Cumulonimbus: Very tall, dark clouds; often anvil-shaped; mean that there may be severe thunderstorms or even tornadoes. Nimbostratus: Low, layered storm clouds; usually dark gray; may have some thunder and lightning and rain hard for a long time. 6 What’s Up? Clouds and Your Weather – Grade Seven Attachment A (continued) Pre-Assessment 1. Name the cloud type or cloud types that you observed. ________________________________________________________________________ 2. Describe how and why you classified your cloud(s) the way that you did. ________________________________________________________________________ ________________________________________________________________________ 3. Predict the weather based on the clouds that you observed. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 7 What’s Up? Clouds and Your Weather – Grade Seven Attachment B Post-Assessment Name: _______________________________ Directions: Draw a picture of the cloud underneath its name. Write two words that describe the cloud type. Describe the altitude as high, middle or low. Fill in the type of weather usually associated with this cloud. Cloud type Cumulus Description Altitude Weather predicted Stratus Nimbostratus Altocumulus Cirrus Cumulonimbus 8 What’s Up? Clouds and Your Weather – Grade Seven Attachment B (continued) Post-Assessment Directions: Use the diagram below to answer the following questions. The diagram shows cold air moving from left to right, pushing the warm air up into the atmosphere. 1. What kinds of clouds are likely to form at the edge of this front? ________________________________________________________________________ ________________________________________________________________________ 2. Predict the type of weather that may occur as this front passes over an area. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 9 What’s Up? Clouds and Your Weather – Grade Seven Attachment C Post-Assessment Answers Cloud Type Cumulus Description Puffy Altitude Low or middle Weather Predicted Nice, sunny weather Stratus Flat layers, sometimes a little puffy, cover much of the sky Flattened with layers, but very dark gray bottoms Cover much of the sky Layers of cotton balls Low Hazy and sometimes drizzly. Low Long hard rains Middle to high May bring rain or snow. Cirrus Clouds Wispy, like feathers High Nice at first, but signal a change in the weather Cumulonimbus Shaped like an anvil (broad on the bottom, narrower in middle, fat and broad near the top) Go from low in the sky to very high Thunderstorms and severe weather Sometimes tornadoes Nimbostratus Altocumulus 1. Large, puffy storm clouds are likely to form at the edge of this front as moist warmer air is pushed to higher altitudes. 2. As the front passes over the area, temperatures will drop and heavy rains will fall. As water vapor is pushed higher into the atmosphere, it will eventually turn into precipitation. 10 What’s Up? Clouds and Your Weather – Grade Seven Attachment D Daily Record Sheet Name ___________________ Date Cloud type Sketch Present weather Evening weather 11 What’s Up? Clouds and Your Weather – Grade Seven Attachment E Worksheet Directions: Use the reading provided by your teacher and the descriptions of clouds given below to complete the descriptions of weather fronts. Low clouds Stratus: Layered look, may be somewhat puffy or completely flat, usually reach down to the horizon, could mean rain or drizzle. Cumulus: Puffy cloud, looks like shapes, usually nice weather, but may change into cumulonimbus Middle clouds: Altocumulus: Look like layers of cotton balls with dark gray bottoms, often mean rain or snow High clouds: Cirrus: Very high, wispy clouds, look like feathers, mean a weather front is moving in, tell you that there is going to be a change in the weather Storm clouds: Cumulonimbus: Very tall, dark clouds, often anvil-shaped, mean that there may be severe thunderstorms or even tornadoes Nimbostratus: Low, layered storm clouds, usually dark gray, may have some thunder and lightning and rain hard for a long time 12 What’s Up? Clouds and Your Weather – Grade Seven Attachment E (continued) Worksheet 1. a. Cold front Describe the associated weather conditions. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ b. Draw the map symbol for a cold front. A cold front is the edge of a cold weather mass moving quickly into an area of somewhat warmer air and pushing it up and back. Cold fronts usually move very fast. The weather they cause is often violent. Cirrus clouds may be a day in front. Cumulonimbus clouds may form at the edge moving almost straight up. There are usually nice, clear skies after the edge of the front moves through. c. Sketch a picture of the air masses that meet as a cold front arrives. Show the movement of the air masses, and include clouds that are forming. 13 What’s Up? Clouds and Your Weather – Grade Seven Attachment E (continued) Worksheet 2. Warm front a. Describe the associated weather conditions. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ b. Draw the map symbol for a warm front. In a warm front, a region of cold weather is moving away from an area and being replaced by warmer air. A warm front moves more slowly and gently than a cold front. There may be thunderstorms, but more often long, continuous rain. Cirrus clouds come first, then altostratus or altocumulus, and then stratus or nimbostratus. c. Sketch a picture of the air masses that meet as a warm front arrives. Show the movement of the air masses and include clouds that are forming. 14 What’s Up? Clouds and Your Weather – Grade Seven Attachment E (continued) Worksheet 3. Stationary Front a. Describe the associated weather conditions. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ b. Draw the map symbol for a stationary front. A stationary front acts a lot like a warm front but remains in place, sometimes for several days. c. Sketch a picture of the air masses around a stationary front. Show any movement of air masses and the clouds that occur. 15 What’s Up? Clouds and Your Weather – Grade Seven Attachment E (continued) Worksheet 4. Occluded Front a. Describe the associated weather conditions. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ b. Draw the map symbol for an occluded front. Occluded fronts occur when a cold front catches up with a warm front, and the two bump up against each other and mix. It acts like a warm front on the front side and more like a cold front on the other side. 16 What’s Up? Clouds and Your Weather – Grade Seven Attachment F Worksheet Answers 1. Cold front a. Describe the associated weather conditions. Thunderstorms and severe or violent winds b. Draw the map symbol for a cold front: c. Sketch a picture of the air masses that meet as a cold front arrives. Show the movement of the air masses, and include clouds that are forming. 17 What’s Up? Clouds and Your Weather – Grade Seven Attachment F (continued) Worksheet Answers 2. a. Warm front Describe the associated weather conditions. Steady rain and warmer temperatures; mid-level rain clouds, such as stratus or altocumulus b. Draw the map symbol for a warm front. c. Sketch a picture of the air masses that meet as a warm front arrives. Show the movement of the air masses, and include clouds that are forming. 3. a. Stationary Front Describe the associated weather conditions. Expect to see warmer temperatures and a steady rain, with stratus or altocumulus clouds. The conditions will persist over time. b. Draw the map symbol for a stationary front. 18 What’s Up? Clouds and Your Weather – Grade Seven Attachment F (continued) Worksheet Answers c. Sketch a picture of the air masses around a stationary front. Show any movement of air masses and the clouds that occur. 4. a. Occluded Front Describe the associated weather conditions. Can see slow, steady rain and mid-level clouds, like with a warm front, and storms and cumulonimbus clouds, like with a cold front. b. Draw the map symbol for an occluded front. 19 What’s Up? Clouds and Your Weather – Grade Seven Attachment G Map Exchange Worksheet Name _____________________________________ Directions: Make weather predictions from your own map first. Then exchange maps with another group. Continue exchanging maps and making predictions until you have looked at each group’s information or until the teacher tells you that time is up. Map #___: General location examined: __________________ (Example: East, Midwest, Southeast) Type of front ________________________________________________________ Clouds that signal the front coming in _____________________________________ Clouds that may form along the front ______________________________________ Type of weather expected (include precipitation and temperature):_______________ ____________________________________________________________________ ____________________________________________________________________ Map #___: General location examined: __________________ (Example: East, Midwest, Southeast) Type of front _______________________________________________________ Clouds that signal the front coming in ____________________________________ Clouds that may form along the front _____________________________________ Type of weather expected (include precipitation and temperature):______________ ___________________________________________________________________ ___________________________________________________________________ 20 What’s Up? Clouds and Your Weather – Grade Seven Attachment G (continued) Map Exchange Worksheet Map #___: General location examined: __________________ (Example: East, Midwest, Southeast) Type of front _________________________________________________________ Clouds that signal the front coming in ______________________________________ Clouds that may form along the front _______________________________________ Type of weather expected (include precipitation and temperature):________________ _____________________________________________________________________ _____________________________________________________________________ Map #___: General location examined: __________________ (Example: East, Midwest, Southeast) Type of front _________________________________________________________ Clouds that signal the front coming in ______________________________________ Clouds that may form along the front _______________________________________ Type of weather expected (include precipitation and temperature):________________ _____________________________________________________________________ _____________________________________________________________________ 21