weather

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