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Download continental drift and tectonic plates: a webtask
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Name: CONTINENTAL DRIFT AND TECTONIC PLATES: A WEBTASK Once you have watched the videos you’ll be able to answer most of the questions. There are some answers to some questions that you’ll have to search on the extra links and animations provided to you. Good luck. Download this page to give it to your teacher. 1. What is considered Continental Drift? 2. The name of the supercontinent that was formed 200 million years ago is ____________________________ 3. Why did Alfred Wegener name his “supercontinent? 4. When this continent fragmented, new continents were formed. Their names were ______________________ and ___________________. Africa was part of ___________ and North America of ______________ 5. Are tectonic plates still moving today? Explain. 6. 7. 8. The two plates that form Iceland nowadays are___________________ and ____________________ 9. What two plates meet at San Andreas Fault? ___________________________________________________________ ___________________________________________________________ 10. What is the Ring of Fire? Where is it situated? 11. What does a tectonic plate consist of? 12. What is the aesthenosphere? 13. What is the lithosphere and what is the name of the parts in which the lithosphere is divided? 14. What happens when plates drop and when they collide? 15. Observe the plates on Earth where the fault lines (lineas de fallas) are situated and the places where volcanoes are situated. What do they have in common? 16. Why is magma pushed up to the surface and how? 17. What happens when magma reaches the surface? 18. On what date did Mount Saint Helens erupt and what was the force that caused the eruption? 19. What are Oceanic Plates? And Continental plates? 20. Complete the chart Plate Movement Draw the diagram of each plate movement Constructive/ Destructive Explain why What forms at the boundary? Divergent Convergent Transform 21. Name the three ways the plates move at their boundaries. _____________________________________________________________ _____________________________________________________________ 22. What type of landform forms divergent boundaries on oceanic crust? _____________________________________________________________ _____________________________________________________________ 23. What two types of landforms form at convergent boundaries? _____________________________________________________________ _____________________________________________________________ 24. Which two plates slide past each other on the San Andreas Fault? _____________________________________________________________ _____________________________________________________________ 25. Name the four layers of the Earth and classify them as solid or liquid Layer Solid or liquid
