Physical Science: Force and Motion FSA Study Guide

What is friction?

• when two objects rub together
• when two objects repel
• when two objects attract
• when two objects have same volume

What happens when there is friction?

• chemical energy is produced

• heat energy is lost
• light energy is produced
• heat energy is produced

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NGSS.MS-PS3-5

Which of the following is an example of how friction is produced?

• push box across floor
• box sitting on shelf
• box falling to floor
• opening a box

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed

The rougher the surface, the faster an object will travel over the surface.

• True
• False

Latisha notices that when she rubs her hands together, they feel warm.
Which of the following is the best explanation for why this happens?

• energy is reflected into her hands
• heat energy is produced by the friction
• light energy of the Sun heats her hands
• energy is absorbed from the air molecules by her hands

Tags

NGSS.MS-PS3-5

Shari is using two toy cars to experiment with force and motion. The cars have different masses. Car A has a mass of 100 grams. Car B has a mass of 300 grams. Shari pushes each car forward using the same amount of force. Which car will travel farther?

• Car A will travel farther.

• Car B will travel farther.

• The cars will travel at the same distance.

• It is not possible to predict which car will travel farther.

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Sam was riding his bike up a hill. His pedaling caused the bike to move. What type of force did Sam apply to the pedals to make his bike move?

• friction

• gravity

• pull

• push

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NGSS.MS-PS2-2

As part of a science project, Samuel slides several different objects down a ramp. The objects Samuel uses are a magnet, a marble, a wooden block, and a metal car. Which two forces are acting on all the objects as they slide down the ramp?

• Gravity moves the objects, and friction slows them down.

• Friction moves the objects, and gravity slows them down.

• Magnetism moves the objects, and gravity slows them down.

• Gravity moves the objects, and a pulling force slows them down.

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