Check-in #3 Science Review

What happens to a ball kicked on rocks?

• It speeds up.

• It slows down due to friction.

• It remains the same speed.

• It begins going in the opposite direction.

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What type of change is water freezing into ice?

• chemical change

• physical change

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If rocks are placed into an empty wagon, what effect would it have on the wagon's motion?

• A. It would be easier to speed up but harder to stop than the empty wagon.

• B. It would be harder to speed up but easier to stop than the empty wagon.

• C. It would be harder to speed up and harder to stop than the empty wagon.

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Which wagon below would be the hardest to stop?

• A. wagon with 3 kg of bricks

• B. wagon with 5 kg of bricks

• C. wagon with 8 kg of bricks

• D. wagon with 12 kg of bricks

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What is the effect of heat on plastic?

• Heat makes the plastic expand.

• Heat makes the plastic contract.

• Heat does not change the plastic.

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There is an object moving as shown in the chart below. What can you say about the object's speed?

• A. The object is accelerating.

• B. The object is decelerating.

• C. The object's speed remains constant.

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What forces act on a skydiver with a parachute?

• conduction and convection

• push and pull

• gravity and friction (air resistance)

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What type of heat transfer causes ocean currents to move heat around the world?

• conduction

• radiation

• convection

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Which best describes heat energy during evaporation?

• A. Liquid water absorbs energy from the sun and loses heat energy.

• B. Liquid water absorbs energy from the sun and gains heat energy.

• C. Water vapor loses heat energy.

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Which best describes heat energy during precipitation?

• A. Water vapor loses energy and becomes liquid.

• B. Water vapor gains energy.

• C. Liquid water gains heat energy.

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