Across
- 1. The third rock from the sun!
- 3. Numerical tools used in physics and maths.
- 6. An increase in speed.
- 8. The moon does not have one of these.
- 9. A push or pull.
- 11. Opposes motion.
- 12. The distance light can travel in a year.
- 13. A natural satellite.
- 15. The physics term for speed.
- 16. A vast cloud of gas and dust which could become a star.
Down
- 2. Needed to measure the length of the running track.
- 4. The unit of force.
- 5. To reduce air resistance on an object.
- 7. When forces are equal and opposite.
- 10. An object with so much gravity that light cannot escape.
- 13. The name of our galaxy.
- 14. The American organisation for space exploration (abbreviation)