Earth Science

2. The process by which water vapor turns into liquid water.
4. The solid part of Earth, including rocks, minerals, and landforms.
6. The process by which rocks and soil are worn away by natural forces.
8. The innermost layer of Earth.
11. The layer of gases surrounding Earth.
15. Molten rock beneath the Earth's surface.
16. The process of liquid water turning into vapor.
17. Waves: Waves of energy caused by the sudden breaking of rock within the Earth or an explosion.
18. Water that flows over the ground surface rather than soaking into the ground.
19. The thin outer layer of Earth.
20. Any form of water that falls from clouds to Earth's surface.

1. The rigid outer layer of Earth.
3. Cycle: The process by which carbon is exchanged among the biosphere, geosphere, hydrosphere, and atmosphere.
5. All the water on Earth's surface.
7. The regions of Earth where living organisms exist.
9. The process by which green plants make their food using sunlight.
10. Tectonics: The theory explaining the movement of Earth's plates.
12. The process by which plants release water vapor into the atmosphere.
13. A gas in the Earth's atmosphere that absorbs most of the Sun's ultraviolet radiation.
14. Effect: The trapping of heat in Earth's atmosphere by greenhouse gases.