Earth Science

4. one of the very large sections of hard, solid rock that make up Earth's outer layer
5. the layer of soft, solid rock underneath Earth's plates
7. hot liquid rock on the surface of Earth
8. the outside or top layer of something
10. hot liquid rock below the surface of Earth
11. the hard, rigid outermost part of the Earth that forms the plates
13. a long, deep indentation in the ocean floor formed when two plates move together
16. the sudden pushing out of something, such as lava from a volcano
19. the slow pulling apart of land that is cause by plate movement
20. a natural spring that sends hot water and steam suddenly into the air from a hole in the ground
21. moving toward the same place

1. any of the many processes (such as eruptions and lava flows) in which gas, lava, and ash are pushed out on the surface of Earth
2. the study of Earth's physical structure and substance, its history, and the processes that act on it
3. the place where two plates meet
6. an underwater mountain range formed when two plates move apart
9. ductile portion of the mantle, located just below the lithosphere
12. a super continent that existed during the late Paleozoic and early Mesozoic eras
14. a sudden shaking of Earth's surface
15. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
17. any of Earth's main continuous areas of land, such as Africa, Asia, and North America
18. moving apart in different directions