Across
- 6. A rigid layer made up of the uppermost part of the mantle and the crust
- 7. A dense sphere of solid iron and nickel at the center of Earth
- 12. The soft layer of the mantle on which the lithosphere floats
- 13. A force that involves any natural process that wears away Earth's surface
- 14. The parts of Earth that contain living organisms
Down
- 1. The layer of hot, solid material between Earth's crust and core
- 2. The densest part of Earth that includes the crust, mantle, and core
- 3. The portion of Earth that consists of water in any of its forms, including oceans, glaciers, rivers, lakes, groundwater, and water vapor
- 4. Vibrations that travel through Earth carrying energy released during an earthquake
- 5. A force that involves any natural process that builds up Earth's surface
- 8. A layer of molten iron and nickel that surrounds the inner core of Earth
- 9. A group of parts that work together as a whole
- 10. The relatively thin layer of gases that form Earth's outermost layer
- 11. The ability to do work or cause change