Caleb shows the force of gravity acting on a ball. He throws the ball into the air. What effect does gravity have on the ball?

• It pulls the ball back down.

• It pushes the ball to the right.

• It pushes the ball higher into the air.

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NGSS.5-PS2-1

The picture shows a bird, a tree, a cloud, and a dog lying on the ground. Which objects are pushing or pulling each other?

• The tree and the dog

• The bird and the cloud

• The dog and the ground

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NGSS.3-PS2-1

The model shows what happened when Lucia placed a ball at the end of a ramp and a toy car at the top of the ramp. How are the forces acting on the car and the ball to cause the movement shown?

• Gravity pulls on the car, and the ball pushes on the car.

• Gravity pulls on the car, and the car pushes on the ball.

• The ramp pulls on the car, and the car pushes on the ball.

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Which pictures show pushing forces and which show pulling forces? Select 2 correct answers.

• Picture A and C show a pushing force

• Picture B and D show a pulling force.

• All pictures show pushing forces.

• Only picture C shows pushing forces.

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Which examples BEST describe gravity acting on an object or objects? Circle TWO correct answers.

• kite flying in the sky

• flag waving on a flagpole

• skydiver parachuting to Earth

• tower of toy blocks sitting on table

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Zuri tapes the magnets to the tops of two toy cars as shown. When the cars are together, what will happen? Circle TWO correct answers.

• The front of Car 1 will repel the back of Car 2.

• The front of Car 1 will be attracted to the front of Car 2.

• The back of Car 1 will be attracted to the front of Car 2.

• If the cars are placed side by side and facing the same way, they will repel each other.

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Avi tests one magnet and ten paper clips. She uses a ruler to measure how far the paper clips are from the magnet. Avi holds the magnet and counts how many paper clips move to the magnet at each distance. The table shows Avi’s results. How does the magnet affect the paper clips? Avi sees that when the magnet is ____________ the paper clips, it pulls more paper clips.

• farther from

• closer to

• stronger

• weaker

• equal distantance from

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Avi tests one magnet and ten paper clips. She uses a ruler to measure how far the paper clips are from the magnet. Avi holds the magnet and counts how many paper clips move to the magnet at each distance. The table shows Avi’s results. How does the magnet affect the paper clips? Avi sees that when the magnet is CLOSER to the paper clips, it pulls MORE paper clips. This tells Avi that the magnet has a ____________ pulling force when it is closer to the paper clips.

• farther from

• weaker

• less effective

• stronger

• closer to

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Gravity is a ____________________ force? 

• push
• pull

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NGSS.5-PS2-1

________ is the force that pulls objects down to Earth.

• Friction

• Magnetism

• Gravity

• Pushing

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