Ch. 11: Vocabulary Review-Forces and Motion Review

What is the pivot point of a lever called?

• effort.

• fulcrum.

• gear.

• spring.

A bus traveled 35 kilometers in one hour. What was the speed of the bus?

• 70 kilometers per hour

• 10 kilometers per hour

• 25 kilometers per hour

• 35 kilometers per hour

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When does kinetic energy transform into potential energy?

• a car accelerates on a highway.

• a ball is thrown upwards.

• a leaf falls from a tree.

• a river flows downstream.

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When one team in a tug of war pulls harder on the rope than the other team does, the forces are

• active.

• balanced.

• magnetic.

• unbalanced.

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What does the position of an object refer to?

• its weight.

• its shape.

• its location.

• its texture.

The force that occurs when one object rubs against another object is

• friction.

• gravity.

• magnetism.

• weight.

Circle the letter of the best answer. A slide in a playground is an example of a simple machine called a(n)

• lever.

• wedge.

• inclined plane.

• gear.

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Circle the letter of the best answer. When you rub your hands together, some energy of motion is changed to

• energy of position.

• heat.

• stored energy.

• water.

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Circle the letter of the best answer. To find out how long your pencil is, you would use a(n)

• scale.

• ruler.

• stopwatch.

• compass.

Circle the letter of the best answer. An example of a change in motion caused by a contact force is

• gravity pulling you toward Earth.

• two magnets pushing each other apart.

• hitting a baseball with a bat.

• a book falling from your desk.

Tags

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