physics vocabulary

2. The bending of light as it passes through different mediums.
4. A measure of the amount of matter in an object.
8. The force that acts on a mass due to gravity.
14. The process of a substance changing from a gas to a liquid.
15. The resistance of an object to changes in its state of motion.
16. the discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents.
18. The fundamental force that holds atomic nuclei together
19. The unit of electrical resistance.
20. The SI unit of energy.

1. The bending of a wave around obstacles and the spreading of waves as they pass through openings.
3. The study of motion and its causes.
5. energy The energy an object possesses due to its motion.
6. The speed of an object in a particular direction.
7. The SI unit of force.
9. The force of attraction between any two masses in the universe.
10. This particle has a negative charge and orbits the nucleus.
11. The point in an object where its mass can be considered to be concentrated.
12. The rate of doing work or transferring energy
13. The force that opposes the motion of objects through air.
17. The fundamental particle that makes up all matter.