Unit 5: Plate Tectonics
Across
- 3. A baseball has a ______ density than a rubber ball.
- 5. _______ is the name for all the continents as one landmass.
- 6. how much "stuff" in a certain amount of "space"
- 7. Alfred Wegener found the same kind of ________ on different continents, which supported his idea that the continents were once one.
- 9. movement of continents across Earth's surface
- 12. the _________ boundary is when the plates move away from each other
- 13. Earth's hard, outermost layer
- 15. when one plate slides below another
- 17. If an object's density is less than water, it will _______.
- 18. layer that is almost as hot as the surface of the Sun
Down
- 1. underneath the Earth's crust, the largest layer
- 2. the _________ boundary is when the plates slide past each other
- 4. the ________ boundary is when the plates collide
- 8. If an object's density is more than water, it will _______.
- 10. pieces of Earth's crust and upper mantle; constantly drifting
- 11. A foam ball has a ______ density than a marble.
- 14. If an object's density is equal to water, it will _______.
- 16. liquid core, between the mantle and inner core