Across
- 3. the study of the forces and processes that produce weather
- 5. a testable explanation of a situation
- 7. studies the materials that make up Earth and Earth's history
- 9. the area from Earth's surface down to its center
- 10. the rigid outer shell of Earth
- 11. SI unit of length
- 12. an explanation based on many observations
- 15. the study of objects beyond Earth's atmosphere
- 17. the application of scientific discoveries
- 18. the blanket of gas that surrounds the planet
- 19. a type of variable that is changed by the experimenter
Down
- 1. the area below Earth's mantle
- 2. SI unit of time
- 4. the study of Earth's oceans
- 6. SI unit of mass
- 8. SI unit of weight
- 13. all of the water on Earth
- 14. a principle that describes the behavior of natural phenomena
- 16. all organisms on the planet and the environments where they live