Plate Tectonics Scavenger Hunt

Transcription

1 Plate Tectonics Scavenger Hunt Directions: GO TO TEACHER WEBPAGE FOR LINKS TO WEBSITES! Read each page from the websites very carefully and use the information given to complete the scavenger hunt. SITE: Pangea to Present-A History of Earth s Plates To move from page to page click on the Next button at the bottom of the page. If you need to go back to a previous slide, click the Back button at the bottom of the page. 1. In the box to the right, sketch and label the layers of the Earth. 2. In the mantle section of the Earth s Layers diagram, the circular arrows represent. 3. The convection currents turning over and over causes the plates to. 4. The moving plates cause,, and the production of crust and the destruction of crust. Earth s Layers 5. The earth s crust is broken into many pieces called. 6. A plate occurs where two plates come together. 7. List and describe the three types of plate boundaries and how they move. 8. came up with the Continental Drift Theory which states that states that the have and are still moving today. 9. Scientists believe these plates have been moving for millions of years. In fact, 250 million years ago the Earth's seven continents were all grouped together into a supercontinent called. 10. What proof do scientists have that the North American continent used to be much farther south and east than it is today? 11. Pangaea is believed to have broken up due to the that roll over in the upper zone of the mantle which causes the plates to move slowly. 12. The was formed due to a 3 way split in the crust allowing massive flows. 13. What is the proof that South America and Africa were once connected?

2 14. Describe three ways in which the world will be different 50 million years from now. SITE: Puzzles of the Earth To move from page to page in this website, click on the puzzle piece. 1. What are the 3 main parts of the earth? 2. The is the very center and it is subjected to extreme and. 3. The is between the core and the crust and is made up of materials but the upper mantle is made of a semi-liquid molten rock called. 4. The is the thin outermost layer that floats above the mantle. It is made up of solid rocks which make up the and plates. 5. By looking at the Earth diagram, which layer of the Earth do we live on? 6. Click on the Earth Map: A Gigantic Puzzle at the bottom of the page to answer the following question: Which plate do we live on? 7. The Earth s crust is divided into several pieces called which hold or contain the land or sea above them. 8. The plates are moved by in the mantle. 9. The continuous movement of plates is known as. 10. There are two basic types of plates: Oceanic and Continental. Match each description using a C for Continental plates or O for Oceanic plates. Crust that "carries" the ocean Crust that "carries" the continents; may also contain oceans Less dense and tends not to subduct More dense and tends to be subducted 11. How do plates move? Plates float on the magma. The of the Earth heats up the materials inside it including the magma and this causes. As the magma heats up it will and spread out across the surface, then cool and, dragging along the plates attached to it. 12. The 3 types of plate movements are,, and.

3 Convergent Plate Movement 13. Draw a picture of the plates with the direction arrows similar to the animated diagram to show what is happening at a convergent boundary. Describe what happens in each Convergent Boundary Situation 14. When a Continental plate and Oceanic plate collide occurs. The oceanic plate under the continental plate because it is dense. The crust carrying the ocean plate melts due to friction and. The collision causes cracks in the and rises up in the these cracks. As the magma reaches the surfaces it solidifies building up a. The converging of oceanic and continental plates also causes deep oceanic and fold to form. 15. When two Continental plates converge one plate will be forced only slightly under the other plate but no will occur. The pressing together of the plates will cause the crust to fold and form mountains. 16. When two Oceanic plates converge, one may under the other causing magma to rise and form. Divergent Plate Movement 17. Draw a picture of the plates with direction arrows similar to the animated diagram to show what is happening at a divergent boundary. 18. In a Divergent Boundary plates are moving from each other. rises up at the plate boundary where it cools at the surface and forming new crust. 19. Divergent plate movement takes place at the boundary of the oceanic plates and forms sea floor. This process is called. 20. A long chain of mountains on the ocean floor is called an. 21. Watch the animated diagram of a divergent boundary forming a volcano. By watching the diagram explain how a submarine volcano is formed. (Hint: there are about 5-6 steps ) Transform Plate Movement 22. Draw a picture of the plates with direction arrows similar to the animated diagram to show what is happening at a transform boundary. 23. At a transform boundary there is a lot of between the rocks as the plates slide past each other so the movement is not smooth. Since the of the underlying magma are still dragging the plates there is a lot of tension and pressure built up. When there is sufficient buildup of pressure the rocks in the plates break and get jerked apart causing.

4 24. What are three geographic features formed by plate tectonics? Topographic Maps Directions: GO TO TEACHER WEBPAGE FOR LINK TO VIDEO! As you watch the video, take notes including key terminology and definitions and the topographic map rules. Introduction to Topographic Maps (VIDEO NOTES) 1. Why do you think the map is labeled Three Sisters? THREE SISTERS 2. What land feature is represented at Location A? Explain. 3. What is the contour interval of this map? 4. Which Sister is steeper and how do you know? 5. Explain what will happen to this land feature over time.

5 Pangaea to Present A History of Earth s Plates - Puzzles of the Earth - Introduction to Topographic Maps - Teacher KEY video notes - Topo maps definition - Contour interval - Index contour lines - Contour interval - Compass Rose - Topo Map Rules: 1. Steep close contour lines Gentle spread out lines 2. Contour lines bend upstream form v 3. rings of cirlces that get smaller = hill/mountain 4. highest elevation is just below what the next contour line value would be 6. Depression/crater = hachures/hatch marks