- 1. A ______ is a push or a pull.
A) simple machine B) force C) pulley D) friction
- 2. Simple machines make work easier by trading _____ for force.
A) friction B) distance C) work D) motion
- 3. A wheel barrow is an example of a ______ class lever.
A) first B) third C) second D) fourth
- 4. Which is an example of a wheel and axle that make work easier by reducing friction?
A) wheelbarrow B) pencil sharpener C) ladder D) screwdriver
- 5. Which part of the lever supplies the force to move something?
A) load B) effort C) fulcrum
- 6. Which part of the lever is the part you are trying to move?
A) effort B) fulcrum C) load
- 7. What should you do to reduce the amount of effort needed to lift something using a first class lever?
A) move the fulcrum to the middle of the lever B) move the fulcrum closer to the load C) move the fulcrum closer to the effort
- 8. Which simple machine does a flagpole make use of?
A) inclined plane B) screw C) pulley D) lever
- 9. Which simple machine makes up a pencil sharpener? (the one mounted on the wall)
A) lawn tractor B) wheel and axle C) inclined plane D) pulley
- 10. Machines reduce the amount of work needed to do a job
A) True B) False
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