What two factors are used to describe motion?

• Temperature and pressure

• Weight and height

• Color and shape

• Speed and direction

What type of energy is stored and has the potential to move?

• Potential energy

• Thermal energy

• Kinetic energy

• Mechanical energy

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Which example best illustrates kinetic energy?

• A girl holding a ball

• A swinging girl

• A parked car

• A book on a shelf

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What is friction?

• A measure of weight

• A force working in the opposite direction of motion

• A type of energy

• A force that speeds up motion

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What causes a ball thrown into the air to come back down?

• Potential energy

• Friction

• Kinetic energy

• Gravity

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Which type of energy is associated with moving gears?

• Mechanical energy

• Thermal energy

• Sound energy

• Light energy

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What type of energy is produced by a light bulb?

• Thermal energy

• Mechanical energy

• Light energy

• Chemical energy

What is the first law of motion also known as?

• Law of gravity

• Law of action-reaction

• Law of inertia

• Law of acceleration

According to Newton's second law, what is needed to move a heavier object at the same acceleration as a lighter one?

• More force

• The same force

• No force

• Less force

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What does Newton's third law state?

• An object at rest will stay at rest

• Energy cannot be created or destroyed

• The greater the mass, the greater the force needed

• For every action, there is an equal and opposite reaction

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