Unit 2 Review

6. Heat transfer between objects or particles that have direct contact.
8. Heat transfer caused by the movement of liquid or gases. Cold air or liquid sinks and hot air or liquid rises.
10. The amount of force that comes out of a simple machine
11. How far a force is applied
12. block heat and very little can pass through
13. "A bar that rotates around a pivot point to lift objects"
14. used to measure force (N)
16. Heat transfer over a distance due to electromagnetic waves.
17. "A rope wrapped around a wheel to help lift heavy objects"
19. "Used to split objects apart, hold objects in place, or lift objects from the ground"
20. Uses very little force to roll along the ground
22. A force in a certain direction. Equal to energy

1. "Simple devise WITHOUT moving parts that changes the magnitude or direction of a force"
2. A push or pull (N)
3. allow heat to pass through
4. The movement of heat particles from hot to cold. It stops moving once there is an equal temperature.
5. "A rod with grooves that wrap around it going from top to bottom"
7. A ramp
8. A machine that combines 2 or more simple machines
9. The amount of work required to move a simple machine
15. Getting the best end result with very little wasted effort or heat
18. heat bounces off, does not get trapped
21. trap heat