Understanding Forces

What is a force?

• A push or pull on an object

• A type of energy

• A form of matter

• A unit of measurement

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Forces are at work everywhere in the Universe. True or False?

• True

• False

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Which of the following is a force that you do not see but know exists?

• Gravity

• Friction

• Electricity

• All of the above

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Name a force that you can see at work in your classroom when a chair is moved on the floor.

• Gravity

• Friction

• Magnetism

• Electricity

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The wind pushing against you outside is an example of a force you have felt but not seen.

• True

• False

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Fill in the blank: You have to push on some doors to open them, while others you have to ____.

• pull

• slide

• lift

• turn

Forces cause every motion and every change in motion that you see around you.

• True

• False

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NGSS.MS-PS2-2

Force is measured in the SI unit called the ____.

• newton

• joule

• watt

• pascal

Which of the following is an example of a force you can see at work in your classroom?

• Students pushing chairs

• Objects falling due to gravity

• Paper flying when a fan is on

• All of the above

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NGSS.MS-PS2-4

A newton is:

• a unit of force

• a type of fruit

• a mathematical constant

• a famous scientist

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