Across
- 4. the outermost layer of the planet, made of solid rock. It's the lightest and most buoyant layer of the Earth, and is relatively thin compared to the other layers
- 5. the mostly solid, rocky part of Earth; extends from the center of the core to the surface of the crust
- 6. the part of Earth where life exists; includes all the living organisms on Earth
- 8. the innermost layer of Earth, a solid ball of iron and nickel that's extremely hot and dense
- 11. the solid, outer layer of Earth that consists of the crust and the rigid upper part of the mantle
- 12. a liquid layer of Earth that's made up of mostly iron and nickel located between the mantle and the inner core
Down
- 1. a mixture of gases and particles that surrounds a planet, moon, or other celestial body
- 2. all of Earth’s water, taken together in all states of matter
- 3. the thick layer of Earth that lies between the crust and the core. It's mostly solid, but behaves like a viscous fluid over long periods of time
- 7. the outermost layer of Earth's lithosphere that forms the continents and continental shelves
- 9. the thin, dense layer of rock that forms the ocean floor
- 10. the soft layer of the mantle on which the tectonic plates move