Simple Machines

A push or a pull on an object is an example of

• force

• weight

• energy

• work

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• pull

• magnetic

• friction

• push

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• The left side of the seesaw will go up.

• The right side of the seesaw will go up.

• The right side of the seesaw will go down.

• The seesaw will remain in the same position.

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• Team X because it will apply more force than Team Y

• Team Y because it will apply more force than Team X

• both teams because they will apply the same force

• neither team because they will both apply the same force

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• The rock moves up.

• The rock moves down.

• The rock stays where it is.

• The rock moves toward the middle.

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Two workers are painting a house. They are using a pulley system to help them. How does this pulley system most likely help the workers?

• It makes the workers use less rope.

• It keeps the bucket from spilling.

• It makes the bucket easier to lift.

• It keeps the worker from falling.

Seth wanted to remove a large rock from his garden. Which tool would make it easiest to lift the rock out of the soil?

• Level

• Wheel and axle

• Inclined plane

• screw

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Workers push a heavy box up an inclined plane and onto a truck. Which best explains why these workers use an inclined plane?

• It makes their work easier.

• It keeps their clothing clean.

• It keeps the box from breaking.

• It makes the box weigh less.

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People use a crane to:

• travel quickly over long distances.

• change the direction an object travels.

• hold materials together.

• lift heavy objects.

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A person must lift a heavy load of bricks to the top of a building. Which simple machine is best used for this task?

• a wedge

• a pulley

• an inclined plane

• a wheel and axle

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