Across
- 2. cycle the process of water change from one form to another
- 4. The science that studies the shape, size and other measurements of the earth.
- 5. A Greek philosopher who tried to convince people that the earth was spherical.
- 8. An area of water that covers 70 percent of the earth’s surface
- 9. people who travel into space
- 11. The layer of the earth that is made up of land or solid rock and soil
Down
- 1. The sphere or area around planet earth where living organisms exist.
- 3. A mixture of gases and dust around the earth.
- 4. Earth-shaped.
- 6. The Greek philosopher who calculated the measurement of the earth.
- 7. The planet that supports life.
- 10. planet Earth’s nickname.