- 1. Friction is present whenever surfaces _________
A) look like simple machines B) touch C) break open D) are smooth
- 2. Objects weigh more on Earth than they do the _________
A) moon B) sun C) ocean D) Milky Way
- 3. The force on a magnet is called __________________
A) magneto B) kryptonite C) supernatural force D) magnetic force
- 4. Forces that act on an object but cancel each other out are called ___________
A) balanced forces B) air forces C) unbalanced forces D) force fields
- 5. Ships made of steel are still able to float
A) True B) false
- 6. Levers have _________ parts
A) one B) three C) four D) two
- 7. An inclined plane allows you to use ___________ force over a distance to make work easier
A) No B) less C) more D) 2 times as much
- 8. Which simple machine does a flagpole make use of?
A) lever B) inclined plane C) screw D) pulley
- 9. Which simple machine makes up a pencil sharpener? (the one mounted on the wall)
A) pulley B) lawn tractor C) inclined plane D) wheel and axle
- 10. Machines reduce the amount of work needed to do a job
A) True B) False
- 11. A knife and chisel are both ____________
A) pulleys B) wedges C) screws D) inclined planes
- 12. What causes a ship to float in water?
A) Aquaman B) magnetic force C) fish D) buoyant force
- 13. Which simple machine is part of a screw?
A) pulley B) wheel and axle C) inclined plane D) fulcrum
- 14. Work uses force to move an object through a _________
A) pulley B) distance C) magnetic field D) wall
- 15. A ____________ is an example of a simple machine called an inclined plane
A) ramp B) flagpole C) pencil sharpener D) car
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