Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Plate Tectonics Online Video Guide-BB#4 Name: ___________________________________________________________________________________Class:_______ Follow the links provided to watch two different plate tectonics videos and fill in the blanks as you go along. 100 Greatest Discoveries: Plate Tectonics http://www.sciencechannel.com/tv-shows/greatest-discoveries/videos/100-greatest-discoveries-plate-tectonics.htm 1. In the state of _____________________________________________________, two of the world’s largest plates (the ______________________________________ and the _________________________________________) collide. 2. Volcanoes form where plates are ________________________________________________ back into the earth. 3. Some places you have mid-ocean ridges where new earth is formed. In other places, there are strike-slip faults. What is a strike-slip fault?___________________________________________________________________________________________________ 4. _________________________________________________are very important because they’ve allowed scientists to define the plate boundaries. 5. Before volcanoes erupt, there is a lot of ______________________________________ in the earth. Then the magma ascends to the surface causing __________________________________. 6. The sea cliffs in the video formed from _______________________________________ being deposited about ______________________________________ below sea level and have been _______________________________________. National Geographic: Plate Tectonics http://education.nationalgeographic.com/education/media/plate-tectonics/?ar_a=1 7. In the year ______________________________, two scientists publicized the most complete picture of the ocean floor that had ever been created. 8. The illustration called the Tharp-Heezen map was created using ___________________________________ and measurements of the water’s _________________________________. 9. This map is used as evidence of the theory of _______________________________________________________________________________________. 10. The theory explains that earth’s solid outer shell called the ______________________________________________ is broken into ____________________________________________. 11. Because _______________________% of the earth is covered in water, the majority of plate boundaries are found on the ___________________________________________________________________. 12. When two oceanic plates tear away from each other at a__________________________________________ plate boundary, the space between the plates fills with magma that ______________________________________________ when exposed to cold seawater. 13. ________________________________________________ is one of the few locations where the midocean ridge rises up out of the ocean. 14. Iceland was pushed up above sea level by a giant volcanic ________________________________. 15. The North American plate and the Eurasian plate move about____________________________________ every year. 16. While some plates are spreading apart at divergent plate boundaries, others are colliding together at a _________________________________________________ plate boundary. 17. When one plate slides under another, it is called _________________________________________. 18. The pillow shaped rocks found were actually once ________________________________________. 19. The movement of plates causes earthquakes, volcanoes, and supplies____________________________________________ _______________________________________________________________________________________________________.