Plate Motion

4. The top part of the Earth that is thin and solid.
6. The force that moves Earth’s plates.
7. A long, deep indentation.
9. What Earth’s outer layer is made out of under the ocean and land.
10. What scientist Alfred Wegener named the supercontinent that was here long ago.
12. What is created by divergent plates moving apart.
15. The sudden shaking of Earth’s surface.
17. The layer of soft, solid rock underneath Earth’s plates.
18. How often or fast something happens.
19. The very center of the Earth, made of iron
20. The very outer layer of the Earth.

1. The semi-fluid part of Earth’s layers, located right underneath the lithosphere.
2. The place where two plates meet.
3. Something we observe to be similar over and over again.
5. To examine in detail for a purpose.
8. One of the very large sections of hard, solid rock that make up Earth’s outer layer.
11. Moving toward the same place.
13. Moving apart in different directions
14. The dinosaur fossil that was found on both South America and Africa because of plate tectonics.
16. One of the continents that the Mesosaurus fossils were found on.