PS3 Final Exam Review

Which question would allow you to collect data about the strength of an electric field?

• How many wires are connected to a battery?

• How far a charged balloon can attract small paper pieces?

• How does a battery produce electricity?

• What happens when you turn off a circuit?

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NGSS.MS-PS2-3

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A large planet and a small moon are gravitationally attracted to each other. How does the force between them compare?

• The planet pulls the moon with a stronger force than the moon pulls the planet

• The moon pulls the planet with a stronger force than the planet pulls the moon

• They pull on each other with equal force

• There is no gravitational force

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NGSS.MS-PS2-1

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A skateboarder pushes off the ground to start moving. What forces are acting on them?

• Only gravity and air resistance

• Only the force from the push

• No forces are acting

• Gravity, friction, and the force from the push

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NGSS.MS-PS2-2

A basketball bounces off the floor. What forces are acting on it when it is rising?

• No forces are acting

• Gravity and the force from the floor

• Only the force from the floor

• Only air resistance

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NGSS.MS-PS2-2

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A toy car is repelled by a magnet placed in front of it. What forces are acting on the car?

• Gravity and friction only

• Magnetic force and gravity

• Only friction

• Magnetic force, gravity, and air resistance

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NGSS.MS-PS2-3

A floating balloon is motionless in the air. What is true about the forces acting on it?

• They are unbalanced

• Gravity is pulling it down with no other forces

• The upward and downward forces are equal

• The balloon is moving, so forces are acting

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NGSS.MS-PS2-4

A spaceship in deep space fires its thrusters for 5 seconds. What will happen?

• It moves at a constant speed

• It moves only while the thrusters are on

• It moves faster and faster while the thrusters are on

• It slows down when the thrusters turn off

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A soccer ball is rolling across the field and slows to a stop. What force causes this?

• Gravity

• Air resistance

• Friction

• No force—objects stop on their own

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A person pushes a heavy couch, but it doesn’t move. Why?

• The couch is heavier than the person

• No forces are acting

• The couch exerts a force back that cancels out the push

• The person is not strong enough to apply force

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NGSS.MS-PS2-2

If a 500 N force attracts an object, what will happen if the object's mass doubles?

• The force stays the same

• The force doubles

• The force is cut in half

• The force disappears

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