Across
- 3. a flash of electricity in the sky
- 4. a place on a magnet where the pull is the greatest
- 6. the sun and the planets and the planets' moons that move around the sun
- 7. the amount of apce that matter takes up
- 8. a state of matter that takes the shape of its container
- 12. a spinning cloud with a cone shape and very strong winds
- 14. anything from nature that people can use
- 15. alarge storm with heavy rain and strong winds
- 17. an animal that lived on Earth millions of years ago that is now extinct
- 19. to change from a liquid into a gas
- 20. water that falls from the sky. rain, snow, sleet, and hail are kinds of precipitation
- 21. to go into a deep sleeplike state for winter
Down
- 1. the process by which liquid water changes into water vapor, a gas
- 2. the process by which water vapor, a gas, changes into liquid water
- 5. an object that can pull things made of iron or steel and can push or pull other magnets
- 9. a group of stars that seems to form a pattern
- 10. a kind of change that happens when streams, rivers, or lakes get too full
- 11. a shaking of the Earth's surface
- 13. no longer existing or living
- 16. anything that takes up space and has mass
- 18. the group of animals with dry skin covered in scales