Unit 4 Lesson 1

A force can____________.

• make an object move

• make a moving object stop moving

• slow an object down

• all of the above

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NGSS.3-PS2-1

When you push or pull something, you are creating_________________.

• weight

• a speed

• a force

• a surface

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NGSS.3-PS2-1

Which of the following would it take the most force to move?

• a 3-pound ball

• a 5 pound ball

• a 15 pund ball

• a 25 pound ball

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NGSS.MS-PS2-2

Imagine you kick four balls with the same amount of force. Which one will go the farthest?

• a 3 pound ball

• a 5 pound ball

• a 15 pound ball

• a 25 pound ball

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NGSS.MS-PS2-2

What does the force of gravity do to objects?

• It makes them float

• it makes them jump

• it pulls them to the center of earth

• it pushes them apart

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NGSS.5-PS2-1

How does gravity on Earth compare to gravity on the moon?

• It is the same

• There is more gravity on Earth

• There is more gravity on the moon

Objects that have more mass also have more gravity.

• True

• False

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

An example of the force of gravity is-

• a rocket flying through space

• a ball falling to the ground after it has been thrown

• a cloud moving across the sky

• the Sun rising

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NGSS.5-PS2-1

Henry rolled a car across the floor. He then applied a force to the car. The force was one of the four forces shown by the arrows. Which force will MOST likely increase the car's speed?

• Force A

• Force B

• Force C

• Force D

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NGSS.MS-PS2-2

NGSS.MS-PS2-1

Why is person B having a hard time moving down the hill?

• Person B has more friction than person A.
• Person B has the same friction as person A.
• Person B is out of shape.
• Person B has less friction has person A.