Across
- 2. – scientist who studies outer space and objects in it.
- 5. Science – study of the earth's land, water, air, and outer space.
- 8. – small underwater research vessel.
- 12. – scientist who studies the air and weather.
Down
- 1. – study of the earth's oceans.
- 3. – scientist who studies the oceans.
- 4. – scientist who studies he solid parts of the earth and how they change.
- 6. – study of the earth's air and weather.
- 7. – study of outer space and objects in it.
- 9. System – system of measurement used by scientists.
- 10. – study of the solid parts of the earth.
- 11. – Known amount used for measuring.