Across
- 2. The force that holds us down on Earth
- 7. The type of wave that moves at the speed of light
- 8. A stellar object that is very dense but not a black hole
- 10. The path that a planet follows around a star
Down
- 1. An elementary particle that has a name similar to a German dairy product
- 3. A material that allows almost no electric current to pass
- 4. The quantity that measures the energy an object has due to its position
- 5. A quantity that describes how fast something moves
- 6. The unit that measures frequency of a wave
- 9. The unit that measures the strength of a magnetic field