Help with Earth space science (mostly plate tectonics) homework (9th grade)
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Help with Earth space science (mostly plate tectonics) homework (9th grade)

[From: ] [author: ] [Date: 11-06-05] [Hit: ]
used to help piece together the continents in the past - fossils9.if a continental crust converges with and oceanic crust who will get sub-ducted - oceanic crust (contenintal crust is lighter).10.as a rock rises in the asthenosphere it changes from a solid to a - a gas11. over time this is happening to the atlantic ocean - getting smaller13. when all the continents were bunched together in the past it was called - Pangea (supercontinent)15.......

4. Hawaii and yellow stone r these - Super Volcanos

5.type of boundry where one slides past the other one - transform boundry

7. where one plate gets thrust below another - Subduction

8. used to help piece together the continents in the past - fossils

9.if a continental crust converges with and oceanic crust who will get sub-ducted - oceanic crust (contenintal crust is lighter).

10.as a rock rises in the asthenosphere it changes from a solid to a - a gas

11. over time this is happening to the atlantic ocean - getting smaller

13. when all the continents were bunched together in the past it was called - Pangea (supercontinent)

15. thickest type of crust that is not very dense - continental

16. if you heat something you will change its - temperature, malleability, viscosity, etc. Could be anything, not enough information!

19. convection takes part in this part of earth - mantle

20. formed where oceanic crust converges with oceanic crust - island arc (The arc is formed from volcanoes which erupt through the overriding plate as the descending plate melts below it)

22. which is more dense, magma, rock or water - rock

23. you look for volcanoes, mountains, trenches and earthquakes here - oceanic trench

25. where the crust gets pulled apart, it forms this following upwarping - some types of mountain range

29. upper most part of the mantle - crust

12. thin, very dense crust - oceanic crust (Oceanic crust is mostly basaltic, has a low silica content, and is thin and very dense. Continental crust is mostly granite)

14. magma that has a high iron content found at a mid ocean ridges - (Morb) Mid-Oceanic Ridge Basalt

17. name of the man who came up with the current theory of plate tectonics - alfred wegener

16. type of plate boundry at the mid ocean ridge - Mid-Atlantic Ridge

21. center of the earth - core

24. called where continents get welded together - collision boundary
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