Physics Quiz Lessons 1-2

1. What energy conversions and transfers are associated with Newton’s Cradle? Select all that apply (3).

• When a ball is lifted and released, gravitational energy is converted to kinetic energy.

• When the ball hits another ball, kinetic energy is transformed into elastic energy and then transferred to the next ball, and the next.

• Gravitational energy is transferred from the balls to the surrounding air.

• The kinetic energy from the last ball is converted to gravitational energy.

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What types of forces act on the magnetic cannon? Choose all that apply (3).

• contact force

• magnetic force

• electrical force

• gravitational force

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Each of the images is an example of contact forces. What statements below are true regarding contact forces? Choose all that apply (2).

• Contact forces always act in the same direction.

• When two objects are touching, one force is always stronger than the other force.

• Contact forces always act in opposite directions.

• 1. If one force is a push, the other will also be a push; if one is a pull, the other will also be a pull.

A box is sitting on a table. What are the forces acting on the box?

• Friction and tension
• Magnetic force and electric force
• Kinetic energy and potential energy
• Gravitational and contact force

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Which of the marked apples in the picture interact with Earth by at a distance forces?

• 1. Apple 1

• 1. Apple 2

• 1. Apple 3

• 1. Apples 1, 2, and 3

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The force that keeps satellites in orbit around Earth is

• Magnetic

• Gravitational

• Electrical

• Contact

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When one object pushes or pulls another by touching is a(n)

• Electrical Force

• Magnetic Force

• Gravitational Force

• Contact Force

Two magnets are placed in a test tube and the top magnet floats. What is the cause? Choose the best answer.

• There is a pull force between the two different poles and they reinforce one another.

• There is a push force between the two similar poles and they counteract one another.

• The bottom magnet pushes up with a greater force, causing the top magnet to float.

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Newton's cradle eventually slow down and come to a stop. This is because some of the energy is transferred to the air through

• gravitational and potential energy

• kinetic and elastic energy

• kinetic and gravitational energy

• thermal and sound energy

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The closer a steel ball is to a magnet, the _________ the magnetic force is on the ball.

• weaker

• stronger

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