Earth Science

3. The Earth's outermost layer, forming the planet's solid surface?
4. A large ocean wave caused by underwater earthquakes or eruptions?
6. The preserved remains of a once-living organism, often found in rocks?
10. The type of energy derived from the Earth's internal heat?
12. A massive, slow-moving river of ice formed from compacted snow?
14. What are tiny particles of rock and organic material carried by wind or water?
16. A violent, rotating column of air extending from a thunderstorm to the ground?
17. The scientific study of the Earth's structure, composition, and processes?
18. The scientific study of earthquakes and seismic waves?
20. The study of the Earth's oceans, including their composition and currents?

1. The layer of gases that surrounds the Earth?
2. The layer of the Earth beneath the crust and above the core?
5. The boundary between the Earth's crust and the mantle?
7. A fracture in Earth's crust along which movement has occurred?
8. A mountain that erupts with lava, ash, and gases?
9. A large, rigid slab of Earth's lithosphere that can move?
11. The Earth's total water, including oceans, lakes, and groundwater?
13. The process of wearing away the Earth's surface by wind, water, or other natural forces?
15. The study of the Earth's atmosphere and weather?
19. A round rock with a hollow cavity lined with crystals?