Eliza Marks Week 1 Lesson Plans Summerbridge: Geoscience MONDAY JUNE 18 MATERIALS - In Class Handouts - Homework Handouts - Computer paper and markers (for name cards) - Tennis ball - Example name card - ¼ sheet slips of paper OBJECTIVES - students will recall lab riles and classroom rules - students will describe the different components of geoscience - students will identify what tectonics plates are and infer how they develop the Earth’s surface - students will define the size, layers, and composition of Earth PROCEDURE 1. Warm-up a. Students will introduce themselves to the class i. Say name, what school go to, and favorite style/type of show. I’ll start b. Students will make name signs for the first week. Fold name card (hot-dog style), and write with markers c. I’ll write 5 questions on the board and students will answer these silently on a slip of paper I give them. I will collect them and read the facts out and the rest of the class will guess i. Questions: what is your favorite food? what is your favorite subject? Where would you go on vacation if you could go anywhere? What is your favorite movie? Would you more likely be an earthquake, a volcano, or a tsunami and why? 2. Rules a. Classroom: No sitting on desks; raise your hand to speak; complete homework for the next day and if you can’t come talk to me before the homework is due; don’t talk when someone else is talking b. Lab: listen to instructions; be careful; wear goggles and safety-wear if I pass it out 3. Geoscience Introduction a. Pass out class handout b. What is Geoscience? (write on board) i. The root “geo” means Earth ii. The sciences dealing with Earth. We will talk about geology, geo-physics, geo-chemistry, and biology c. Play a “fun facts” about Earth game. (with powerpoint) Students will play. A question goes on power point. First to raise hand will get the tennis ball and answer. If guess off pass to someone else. fill in handout at same time i. Earth’s age: around 4.6 billion years old ii. The Earth’s size: radius is about 6370 km/ 4000 miles 1. Radius is the distance form the center of a circle or sphere to the circumference. In the case of Earth, radius is the distance between the center of the Earth to the Earth’s crust iii. Highest altitude on Earth: Mt. Everest…8.84 km 1. Altitude= elevation= vertical distance iv. Deepest point on Earth: Mariana Trench… 11km deep 1. Trench: a long, narrow, steep cut in the ground. v. Most important elements in the Earth’s crust: Iron (32%) Oxygen (30%) Silicon (15%) Magnesium (14%) vi. Earth is composed of many layers. What are their names? (Fill in more facts as go) 1. Crust (Oceanic and Continental) it is the outermost solid shell of rocky material. 2. Lithosphere (CRUST AND UPPER MOST SOLID MANTLE) (Broken into tectonic plates…talk about later) 3. Mantle a. Viscous layer b. 84% Earth’s volume c. mostly solid and encloses iron rich core) d. top of mantle is asthenosphere: here plastic flow rocks e. rest mantle solid 4. Outer core (molten) 5. Inner core (solid) 4. CLOSURE a. Outline Orally what we will cover in the rest of the course i. Tectonic plates and plate boundaries ii. Minerals and rocks iii. Volcanoes, tsunamis, earthquakes and other natural disasters iv. Water systems (hydraulic cycle, rivers, erosion, groundwater) b. pass out homework and section paper c. on paper write a 3-2-1 card (3 things learned, 2 things have a question about, 1 thing want the me to know) Class Handout Summerbridge Geoscience June 18 Name _________________________________________________ FUN Earth’s age Earth’s size Highest altitude Deepest point 4 most important elements of the Earth’s crust Names of Earth’s layers FACTS Note: what state each layer of the earth’s interior is, and the temprerature and depth of each layer. Homework Sheet Summerbridge: Geoscience Due Tuesday June 19 Name ________________________________________________________________ 1. What is the geoscience topic you are most interested in learning about this summer? Why? How much do you already know about it? 2. The Scientific Method is composed of many steps. What is the purpose of the scientific method? What do you know about each of the following steps (definition, purpose, process, etc) : Observation Formulating Hypothesis Testing Analyzing results Reporting results TUESDAY JUNE 19 MATERIALS - Homework Handouts - Slinky - Power point - 10 question slips that people read and answer for the class OBJECTIVES - students will define the types of Seismic waves and infer how we can use them to measure states of matter - students will describe the Earth’s heat (considering Geothermic gradient), and apply its importance to the process of convection PROCEDURE 1. begin class a. review homework i. students will review answers with a partner, and we will then volunteer answers in the class (answers are included in the lesson) 2. procedure a. How can we measure the earth’s interior? i. Drilling ii. We can use seismic waves (notes on board) 1. Seismic waves: waves of energy that travel through the core of the earth. They are shock waves generated by earthquakes 2. There are two types of seismic waves: body (primary and secondary)(travel into core) and surface 3. Primary waves: fastest, compressional (pushes and pulls). Smaller and higher frequency than s waves. Can travel through liquid or gas 4. Secondary waves: slower/shear. Transverse. Side to side movement. Move through solids only 5. Surface waves: travel along the surface of the earth, slower than s-waves. These are the waves that cause surface damage (mostly) 6. ACTIVITY: (P-waves) have kids line up and put hands on shoulders of student in front of them and keep their arms straight. Have them demonstrate and feel the waves. Each student is a particle, and they will push gently on them and they will move like paves. (S-waves) have kids stand side by side and link arms. Pull one student forward and back gently and have the other students feel the waves iii. what results can we find? 1. We can tell the state of the interior of the earth (solid or liquid), by seeing which waves pass through. b. Earth’s heat i. What does the state of matter in the interior depend on? 1. Heat and pressure (the force on a given area) ii. What happens as go deeper into earth? Remember all the weight of the rocks 1. Temperature rises 2. Geothermic gradient: about 30 degrees C/km iii. Earth’s heat engine? 1. Where heat come from? Solar energy drives external heat. Interior energy from heat trapped during earth’s origin, and radioactivity iv. convection (in mantle) 1. takes place in mantle 2. occurs to deal with uneven distribution of heat in the mantle (hot material form bottom of mantle rises, he material cools and sinks again, forming a cycle) 3. how can this apply to plate tectonics? a. It moves the plates apart and forces hot magma up between the cracks 1. EXAMPLE CONVECTION… VIDEO 2. Start at around 20 seconds explanation convection 3. http://www.youtube.com/watch?v=p0dWF_3PYh4 4. What are some ways we can demonstrate convection using simple materials… how can we use the scientific method to make an experiment for this 5. Hot Chocolate mantle convection Demonstration http://www.youtube.com/watch?v=PdWYBAOqHrk 3. Closure a. Pass out HW sheets b. Pass out question slips and have answer in front of the class. If can’t answer another student can. (1) what do the “s” and “p” in s-wave and p-wave stand for (2) how do seismic waves tell us about the earth’s interior (3) describe the movement of an s-wave (4) describe the movement of a p-wave (5) if your experiment shows your hypothesis is wrong what do you do (6) where does heat from the interior of the earth come from (7) what is the geothermic gradient (8) what are two ways to find out about the earth’s interior (9) what is convection (10) where does convection occur Homework Sheet Summerbridge: Geoscience Due Wednesday June 20 Name ________________________________________________________________ FACTS ABOUT CONTINENTAL DRIFT - Continental Drift is a theory that says the continents are slow moving toward and apart from each other This theory was proposed by Alfred Wegener in 1915 Wenger proposed this after finding similar animals on different continents (like camels are found in Africa and Asia) Also continents could fit together, much like puzzle pieces Wegner suggested that more than 200 million years ago the continents formed a single supercontinent What does finding animals on different continents (like South America and Africa) indicate? What is the possible mechanism of Continental Drift? WEDNESDAY JUNE 20 MATERIALS - In Class Handouts - Homework Handouts - Computer paper and markers (for name cards) - Graham crackers, frosting, wax paper OBJECTIVES - students will identify the aspects of the Theory of Continental Drift and infer the mechanisms and supporting evidence - students will demonstrate the different types of Divergent Tectonic Plates through a Graham cracker example PROCEDURE 1. begin class (Think, Pair and Share) a. what factors do you think contribute to continental drift? What are the consequences of continental drift? i. Continental drift happens because of convection and tectonic plate movement ii. Rift spreading zones and trench subduction zones iii. Landforms: volcanoes, mountain ranges, trenches, earthquakes 2. Procedure a. The Theory of Continental Drift Background i. Alfred Wegner proposed continents on earth move…Theory of Continental Drift ii. He was a meteorologist born 1880 in Berlin, died 1930 in Greenland b. Theory of Geographic Fit (or Continental drift) i. The theory of plate tectonics states that there is a global distribution of geological phenomena such a seismicity, continental drift, and mountain building in terms of the formation, destruction, movement, and interaction of the Earth's lithospheric plates. ii. Fit continents and their shells together well iii. Indicate mountain range: match configurations mountain ranges that line u, match up ancient rock assemblage iv. Appearance of the fossil mesosaurus… a freshwater creature. Fossil found only in South America and Africa. Know freshwater (look at rock and can tell if once a riverbed or lake, can see which plants and animals cohabited the river by fossils). Know mesosaurus poor swimmer and adapted to freshwater…therefore couldn’t have swam across the ocean v. Glaciation: date rocks and show ice 300 million years ago. Glacier wall debris, ice shown on rocks. Put South America, Africa, India, Australia and Antarctica together__ all continents together and covered by an overlapping ice sheet vi. Propose theory “origin of continents and oceans” in 1915 vii. ACTIVITY: ANIMATION interactive animation of movement of plates and continental drift http://www.scotese.com/newpage13.htm c. Divergent boundaries i. One of three types of boundaries (convergent, divergent and transverse) ii. What do you imagine happens at a divergent cone on a continent? On the ocean floor? iii. Oceanic rift at a spreading iv. Continental rift faults. Breaking of crust and spreading. Eventually the crust spreads so thin that magma starts to upheave through the crust, and it then becomes like an oceanic rift v. ACTIVITY: graham cracker activity: 1. Break a whole graham cracker into two square pieces. 2. Using the knife, spread a thick layer of frosting in the center of the wax paper. It should be about the size of a whole graham cracker but twice as thick. 3. Lay the two pieces of graham cracker side by side on top of the frosting so they are touching. 4. To imitate the result of diverging oceanic plates, press down on the crackers as you slowly push down and apart in opposite directions. 5. Remove the graham crackers from the frosting and scrape any frosting off the crackers and return it to the wax paper. Set the crackers aside.” 3. closing class (think and share) a. pass out homework b. what is the purpose of the graham cracker activity? What is the force pulling the “plates” apart? i. It illustrates how magma “plooms up” and makes the crackers move away ii. convection c. How do divergent boundaries tell us about the age of the earth’s crust? How does it support the theory of continental drift? i. We can look at the age of the ocean floor and date it. We notice the crust is younger near the divergent boundaries, and the oldest crust is almost nowhere. This means the crust is going somewhere (or being destroyed at subduction zones), otherwise the crust would be only one age Homework Sheet Summerbridge: Geoscience Due Thursday June 21 Name ________________________________________________________________ 1. List three points we can use as evidence for the Theory of Continental Drift and Plate Tectonics. 2. How do divergent boundaries move? (by what mechanism) 3. How do continental rifts develop into oceanic rifts? THURSDAY JUNE 21 MATERIALS Chalkboard and chalk Paper and pencils Homework handouts Class handout Poster paper Markers Stiro-foam and folder OBJECTIVES Students will recognize the characteristics of transform boundaries and the three types of convergent boundaries Students will classify and differentiate between all types of Tectonic plate boundaries PROCEDURE 1. Warm-up (5 minutes) a. What do you imagine happens when to boundaries slide past each other? How is it different between continental and oceanic crusts? What are the environmental consequences? b. Think Pair and Share c. Points looking for included in lesson. We will write good ideas up on the board and then I will fill in the blanks 2. Transform Boundaries a. A transform boundary is where 2 plates come together and they rub together (each plate goes in an opposite direction) and neither plate loses any land. The San Andres Fault is an example of a transform boundary b. ACTIVITY: make a graham cracker example (using yesterday) i. Use yesterday’s examples ii. Point out how the crumbs flake off and the “friction” c. What are the consequences of the friction: Earthquakes d. An example is the San Andreas fault: continental transform fault that runs the length ) 810 miles through California This is why LA is in such danger of earthquakes e. Right-lateral vs. Left-lateral f. 3. convergent boundaries a. what do you imagine at each boundary? i. Ocean-Ocean ii. Ocean-continental iii. continental-continental b. ocean-ocean convergence i. where oceanic lithosphere meets oceanic lithosphere, one plate is subducted under the other, and a deep sea trench ii. one plate goes over the other and the other is “reabsorbed” into the mantle. They rub against each other causing earthquakes. Bring fresh water down into the mantle and form magma…rises up and forms volcano c. ocean-continent convergence i. oceanic lithosphere is subducted under continental lithosphere and a volcanic mountain belt is formed at the continental margin (because basalt denser than granite) ii. EXAMPLE video from subduction zone in New Zealand iii. http://www.youtube.com/watch?v=NbDqJy28hBw iv. Recall causes volcanoes v. Recall Mariana Treat (11km deep) d. Continent-continent convergence i. Can’t bring continental crust into mantle because less dense ii. You are pushing two things together that can’t go into the earth, so what happens to it? iii. Crust of continent converges and the crust cruples and thickens iv. Ie Himalayas and Tibetan plateau v. Recall Mt. Everest 8,850 km vi. EXAMPLE have a towel and compress from both sides…see the crumples 4. Plate boundary interaction “visualization” http://www.gweaver.net/techhigh/projects/period1_2/Yellowstone/Plate% 20Animations.htm 5. students get into groups of two or three and make a poster classifying the different types of boundaries. They will follow the information required to fill in on the classroom handout. They will then present to the class 6. Closinga. Give kids a piece of paper and have them write he key idea(s) of the first week. We will read them off in class i. Tectonic plates relate to everything ii. Earth is like a puzzle that continues growing and shrinking iii. The question is pretty open ended… Classroom Handout Summerbridge: Geoscience Thursday June 21 Name ___________________________________________________ Type Boundary Divergent Convergent Motion Effect Topography Volcanic activity? Additional characteristics Draw a diagram of each boundary and label Transform Homework Sheet Summerbridge Geoscience Due Friday June 22 Name ________________________________________________________________ 1. Consider where we learned about where volcanoes occur. Why do they occur where they do? What factors cause them? 2. What step of convection occurs at a subduction zone? 3. Considering the types of boundaries we are learning about, is the highest altitude on Earth getting higher? Is the deepest point on Earth getting deeper? FRIDAY JUNE 22 MATERIALS -chalk/chalk board -homework handouts - projector with PowerPoint - handout for each student (http://denali.gsfc.nasa.gov/dtam/ ) (map tectonic plates and their spreading/subduction rate) - activity handout OBJECTIVES Students will list the steps of the Scientific Method and apply it to measure the Earth’s crust to supporting the Theory of Continental Drift Students will draw conclusions about spreading and subduction rates from a map, and deducing growing rates PROCEDURE 1. Warm-up a. Pair and share answers to the homework last night. We will then share answers in the class. 2. Review the scientific method homework (ALSO GO OVER STEPS ON POWERPOINT) i. what is the scientific method? Why is it important? ii. A method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses iii. The observation is done first so that you know how you want to go about your research. The hypothesis is the answer you think you'll find. The prediction is your specific belief about the scientific idea: If my hypothesis is true, then I predict we will discover..... The experiment is the tool that you invent to answer the question, and the conclusion is the answer that the experiment gives. iv. It is important because it is systematic and does not allow for skipping steps. It is rational and allows for confident answers 3. NASA Tectonic Plate handout a. I will put the NASA map on the board (Part of a PowerPoint) and explain students will have 15 minutes to get through as much of the worksheet as possible b. I’ll pass out the worksheets and pair students to fill out the sheet c. We will work on it and I will go around the class answering questions that arise d. We will go over the sheet together 4. Cool down a. We are going to COPY OF IMAGE ON NASA HANDOUT: Needs to be in color Classroom Handout Summerbridge: Geoscience Thursday June 21 Name ___________________________________________________ Exercise 1 – Plate tectonics 1. Check out the Global tectonic activity map of the Earth. It shows tectonism and volcanism of the last one million years and the spreading rates at mid-ocean ridges determined from satellite measurements. a) Along which mid-oceanic ridge do the fastest spreading rates occur? How fast is it? Which plates are involved? b) Where does the slowest spreading rate occur? How fast is it? Which plates are involved? c) Continental rift systems mark divergent margins within a continental mass. Name two major continental rift systems. d) Find the Red Sea (between Africa and the Arabian Peninsula). According to the key of this map, does the longitudinal (North to South) axis of the Red Sea represent an active spreading ridge where new oceanic crust is formed or a continental rift where continental crust breaks apart? e) Alfred Wegener was the first to suggest that the western margin of Africa and the eastern margin of South America fit perfectly together. Assuming that spreading rates have been constant over time and that the average distance between the two continents is ~5000 km, calculate when the two continents were connected. Show your work! 2. Look at the map of Earth with colored bands. What do the color bands of the ocean floor tell you? How did they find these colors? (USE NEXT WEEK--- add activities: another entire class) Carbon Dating b. Put up a map with a color coded dating system c. How do you think we can date the rocks on the ocean floor? i. We can collect a rock sample from the floor d. once we have the rock how do we find the age? i. We can look at Carbon: Carbon dating ii. Does anyone know what an isotope is? iii. Atoms are composed of three things: a proton, a neutron, and an electron. Protons have a charge of +1 and electrons have a charge of -1. In an atom, the proton and electron cancel out each other’s charge. iv. Protons have a mass of 1, and neutrons have a mass of 1, and electrons have a weight of 0. v. Atomic number=proton number vi. Protons + Neutrons = atomic mass vii. An isotope of an element has the same atomic number (proton number), but a different atomic mass (protons +neutrons) viii. MATCHING GAME: I will put out cards with different numbers of protons, neutrons, and electrons, and have students match which ones are the same element but different elements ix. Sometimes there are too many neutrons in an element, and the element can’t hole onto them, so it becomes radioactive… this is called a radioisotope x. A radioisotope is any chemical element that is unstable in the nucleus. This causes the radioactive material to decay and emit radiation. xi. There are two basic forms of carbon: one that occurs naturally, called carbon-12 (12C), and one that forms from processes acting on nitrogen in the atmosphere, called carbon-14 (14C). Both of these combine with oxygen to form carbon dioxide (CO2), which we breathe out and plants take in. When a cow eats grass, its body absorbs the carbon (both 12C and 14C) in the plant. xii. As time goes on, the amount of 14C continues to decrease until nothing is left, which is supposedly about 50,000 years later. When you look at a rock, you can measure the amount of 14C and 12C it contains. Based on how much 14C is left, she can calculate when the rock was made xiii. so we can look at the ration of C-14 that remains is the rock