Across
- 2. A variable resistor is called a_______
- 5. ____________is used to find objects or determine distances from sound
- 9. The gravity of the moon is about a _____ of the gravity on earth
- 10. __________ such as oil are used to reduce friction
- 11. Light travels at the fastest speed in a______
- 12. Pipes carrying hot water or steam have "_________ loops" in them
- 14. The ________ depends on the size of vibrations
Down
- 1. The flow of _________ in one direction in a circuit is called an electric current
- 3. The sum of potential and kinetic energy is___________ energy
- 4. The SI unit for the amount of substance
- 6. When the amount of energy before and after the change is exactly the same we say the total amount of energy is _________
- 7. The _______ in a light bulb breaks if the current flowing through is too large
- 8. The most common form of matter in the visible universe
- 13. An opening in which light travels