Across
- 5. the distance (height) above the ground
- 7. what the air is like at a specific place and time
- 9. the average of a set of numbers
- 14. A part of the eye that changes light signals to electrical signals.
- 15. The total amount of light that comes from a light source (like the sun)
- 16. a science tool that measures mass
- 18. a science tool that measures temperature
- 20. how fast or slow the particles move
Down
- 1. any solid or liquid form of water that falls to the ground from the sky
- 2. the state of matter where the particles slide past each other and move at medium speed
- 3. a solid form of precipitation
- 4. Light that is taken in by an object
- 6. the state of matter where the particles have a lot of space and move fast
- 8. When light bounces off an object
- 10. Connects our eyes to the brain. It carries electrical signals from the retina.
- 11. the smallest part of a substance
- 12. the amount of water vapor (gas) in the air
- 13. When light goes through an object
- 17. the state of matter where the particles are close together and move slowly
- 19. A physical representation of something in the world. It can help us explain phenomena or solve problems.