Across
- 2. a person who uses science to come up with solutions to problems
- 3. recorded measurements or observations
- 6. the fresh water beneath Earth's surface
- 8. the process of a liquid changing to a gas
- 11. an educated guess about a number
- 12. to heat a liquid until it bubbles and turns quickly into a gas
- 13. the amount of money you have to spend on something
- 14. information that can be used to support or reject an idea
- 16. the process of a gas changing to a liquid
- 18. an overflow of water
Down
- 1. water that is not salty, such as the water in most lakes and rivers
- 4. a natural underground source of fresh water
- 5. an image that helps you understand information
- 7. something that limits what you can do
- 9. a measurement of the surface of something
- 10. when one substance mixes with another and it looks like it disappears, such as when sugar mixes into tea
- 11. the height of something
- 15. a test used to discover new information about a question
- 16. a set of events that repeats in the same order over and over
- 17. the air that surrounds a planet