Plate Motion

2. an object, diagram, or computer program that helps us understand
7. an extinct reptile that lived about 300 million years ago
8. hot liquid rock on the surface of Earth
9. one of the very large sections of hard, solid rock that make up Earth’s outer layer
12. to examine in detail for a purpose
13. the slow pulling apart of land that is caused by plate movement
14. moving apart in different directions
15. any of Earth’s main continuous areas of land, such as Africa, Asia, and North America
17. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
20. the layer of soft, solid rock underneath Earth’s plates
21. an underwater mountain range formed when two plates move apart

1. the place where two plates meet
3. a natural spring that sends hot water and steam suddenly into the air from a hole in the
4. moving toward the same place
5. the sudden pushing out of something, such as lava from a volcano
6. is a feature that forms on the surface of a planet, such as a mountain, channel, or sand
10. something we observe to be similar over and over again
11. a diagram that shows what the inside of something looks like
16. a sudden shaking of Earth’s surface
18. hot liquid rock below the surface of Earth
19. how often or fast something happens