Across
- 2. rain, snow, sleet, or hail that falls from clouds onto the ground
- 4. scientific methods used to reconstruct and understand a mystery
- 6. something we observe to be similar over and over again
- 7. when something becomes different over time
- 10. water as a gas
- 12. conditions such as rain, clouds, and wind at a particular time and place
- 14. the layer of the atmosphere closest to Earth, where weather happens
- 15. the force on a surface caused by the weight of the atmosphere pressing down on Earth
- 18. one thing that contributes to causing an event
- 19. the process by which a gas changes into a liquid
- 21. a measure of how hot or cold something is
Down
- 1. the process by which a liquid changes into a gas
- 3. the ability to make things move or change
- 5. where something comes from
- 7. liquid water droplets suspended in the air
- 8. the mixture of gases surrounding a planet
- 9. the scientific study of weather
- 11. to move from one object to another or one place to another
- 13. an amount of air that moves as a unit
- 16. a measure of how much water vapor is in the air
- 17. the movement of air in a particular direction
- 20. when something stays mostly the same over time