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- 1. Multiple Choice
Which of the following is NOT one of the things a machine can do?
Changes the amount of force required.
Changes the distance over which the force is exerted.
Changes the direction of the force.
Changes the amount of work done.
- 2. Multiple Choice
The fixed point around which a lever rotates is know as the
wheel.
fulcrum.
input force.
output force.
- 3. Multiple Choice
Which of the following is NOT an example of the simple machine know as a screw?
lid of a jar
turning on and off a faucet
a drill bit
a screw driver
- 4. Multiple Choice
How can simple machines make work easier?
by decreasing the force needed to complete the task
by increasing the friction between the machine and the object
by adding more work on the object than originally applied
by removing the force of gravity on the object
- 5. Multiple Choice
Which simple machine would be the MOST efficient for lifting an object 30 meters off the ground?
pulley
screw
wedge
lever
- 6. Multiple Choice
Which machine could be considered to be a type of inclined plane?
wheel and axle
lever
screw
pulley
- 7. Multiple Choice
A doorknob is a simple machine made up of 2 circular objects of different sizes. When turning a doorknob, what type of simple machine is being used?
inclined plane
wheel and axle
wedge
pulley
- 8. Multiple Choice
Workers push a heavy box up an inclined plane and onto a moving truck. Which best explains why these workers use an inclined plane?
It makes their work easier because it requires less effort.
It decreases the amount of work they have to do.
It increases the amount of friction necessary to do the task.
It makes the box weigh less.
- 9. Multiple Choice
A group of workers needs to move a piano from the second floor of a building. The piano is too wide to fit through the doorway, so they will lower the piano to the ground through a window. Which simple machine would be the best to help the workers lower the piano from the window?
wheel and axle
inclined plane
pulley
wedge
- 10. Multiple Choice
A house uses a roof to carry away large amounts of rain efficiently. A roof composed of 2 attached inclined planes would be considered which type of simple machine?
wedge
screw
ramp
lever
- 11. Multiple Choice
Simple machines can make work easier by reducing the input force needed to move an object. However, there is a trade off for decreased input. What is the trade off?
The distance the object is moved is increased.
The distance the object is moved is decreased.
The amount of work is increased.
The amount of work is decreased.
- 12. Multiple Choice
Using the back of a hammer makes it much easier to remove a nail from a wooden board. What kind of simple machine would the hammer be classified as if you are using it for this purpose?
Wedge
Lever
Pullye
Inclined Plane
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