5 Written Questions

1. a simple machine that helps us move and carry things to different locations
2. a pulley that is not attached to a stationary object, and can move freely. the load and the force move in the same direction.
3. a simple machine used to hold something together. it has an incline plane wrapped around it
4. energy that is released and forces an object to move
5. stored energy that has the ability to move.

5 Matching Questions

1. work
2. friction
3. wedge
4. 3rd class lever
5. lever

1. a a simple machine that is used to lift a heavy load
2. b when 2 objects rub against each other.
   know when we might want to increase friction and when we might want to reduce it.
3. c (fishing rod) a lever where the force is in the middle
4. d a simple machine used to split things apart or hold something open
5. e when an object is moved, work is done

5 Multiple Choice Questions

1. the act of gaining speed. the more momentum it has, the longer it stays i motion and the further is goes
   1. fulcrum
   2. momentum
   3. force arm
   4. load arm
2. a simple machine that looks like ramp that helps us move things up a sope
   1. force arm
   2. 2nd class lever
   3. incline plane
   4. fixed pulley
3. wheels with teeth, that connect and make machines work
   gears work opposite each other
   1. work
   2. lever
   3. wedge
   4. gears
4. the area on the lever between the force and the fulcrum
   1. momentum
   2. force arm
   3. force
   4. load arm
5. the object that balances the lever
   1. work
   2. screw
   3. fulcrum
   4. force

5 True/False Questions

1. force → when an object is moved, work is done

   True        False

2. load arm → the area on the lever between the fulcrum and the load

   True        False

3. lubrication → when 2 objects rub against each other.
   know when we might want to increase friction and when we might want to reduce it.

   True        False

4. energy → the ability to do work

   True        False

5. fixed pulley → a pulley that is attached to a stationary object. where the force and the load move opposite each other. used to help lift a heavy object

   True        False