Plate Motion

1. The top part of the Earth that is thin and solid.
4. The very center of the Earth, made of hot solid iron.
5. The dinosaur fossil that was found on both South America and Africa because of plate tectonics.
7. The very outer layer of the Earth.
12. Moving apart in different directions
13. What is created by divergent plates moving apart.
15. Something we observe to be similar over and over again.
17. One of the continents that the Mesosaurus fossils were found on.
18. How often or fast something happens.
20. Moving toward the same place.

2. A long, deep indentation.
3. The semi-fluid part of Earth’s layers, located right underneath the lithosphere.
6. The sudden shaking of Earth’s surface.
8. The place where two plates meet.
9. The force that moves Earth’s plates.
10. One of the very large sections of hard, solid rock that make up Earth’s outer layer.
11. What scientist Alfred Wegener named the supercontinent that was here long ago.
14. What Earth’s outer layer is made out of under the ocean and land.
16. The layer of soft, solid rock underneath Earth’s plates.
19. To examine in detail for a purpose.