Physics Review

3. A neutrally charged subatomic particle.
4. The number of complete cycles of a wave passing a fixed point of time.
6. _____ describes the force of gravity working on an object.
9. Pressure is ______ proportional to temperature.
10. A continuous physical force exerted on or against an object by something in contact with it.
13. A small dense region at the center of an atom.
16. The maximum displacement or distance moved by a point on a wave.
17. A fundamental force of nature that causes attraction between objects with mass.
18. The symbol used to define wavelength.
20. Force is equal to mass * _______.

1. Pressure is ______ proportional to volume.
2. Newton's third law says for every action there is an equal and _____ reaction.
5. A fundamental property of matter that describes how objects interact with electric and magnetic fields. It can be positive or negative.
7. When two objects push away from each other.
8. When two objects move towards each other.
10. A positively charged subatomic particle.
11. Newton's first law discusses this.
12. The distance between two successive crests of a wave.
14. A negatively charged subatomic particle.
15. The change in distance travelled in a given time.
19. The amount of matter in something.