Across
- 4. Opening in the earth's crust through which lava, volcanic ash, and gases escape
- 5. A change in size, shape, or state of matter
- 8. Earth completes one in 24hrs
- 9. A weight to be moved in a simple machine
- 11. Instrument that measures air pressure
- 12. The process of wearing or being worn by long exposure to the atmosphere
- 13. A rapidly spinning column of air that comes out of a thunderstorm and touches the ground
- 15. Pushing or pulling force that a magnetic material creates
- 16. A push that makes a lever move
- 18. Earth orbits the Sun in 365 days
- 19. Plants make their own food during a process called
- 22. The shaking of the Earth's surface resulting from a sudden release of energy
- 25. When a light wave changes speed and direction as it moves from one medium to another
- 26. Many millions of stars held together by gravity
- 27. When a wave is taken in by an object
Down
- 1. Lumps of minerals
- 2. All of space and everything in it
- 3. The basic unit of a living organism that can perform all life process
- 6. Muscles that you are not able to control
- 7. A species that is at risk of dying out
- 10. Are consumers that get food energy from plants and another animals.
- 14. When a wave bounces back of a surface
- 17. Material that allows heat to pass through
- 19. Any liquid or frozen water that forms in the atmosphere and falls back to the earth
- 20. 6th planet in the solar system
- 21. New substances with different properties are formed
- 23. What makes Earth unique
- 24. Material that limits the amount of heat that passes through