Across
- 1. This is caused by the vibration of air particles
- 4. The unit of speed
- 7. The time for the Moon to orbit the Earth
- 9. Opposite poles of a magnet do this
- 11. The unit of distance
- 12. The unit of time
Down
- 1. Distance divided by time
- 2. The time for the Earth to orbit the Sun
- 3. length x width x height
- 5. This is made when a current flows through a conductor
- 6. An object which orbits the Earth (the Moon is the only natural one)
- 8. A place with no particles
- 10. Like poles of a magnet do this
- 13. The time it takes for the Earth to make one rotation on its axis