The table shows the weights of several students. Which student requires the most force to move his or her

body?

• Daniel

• Maria

• Sally

• Tyler

Apples hanging from tree branches eventually fall to the ground. Which force most likely causes the apples to fall to the ground?

• gravity

• friction

• collision

• magnetism

Which will slow an object in motion?

• speed

• friction

• gravity

• momentum

Juan goes for a run. After running for 20 minutes, he takes a 5­ minute break, then continues his run. Which graph best represents this?

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Which graph depicts an object whose speed is increasing?

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How do plants contribute to the water cycle?

• Plants cool the air and create condensation.

• Plants warm the air and create precipitation.

• C. Plants give off water through transpiration.

• Plants give off water in the form of runoff or groundwater.

Which part of the water cycle is occurring when warm, moist air cools and begins forming clouds?

• condensation

• evaporation

• precipitation

• transpiration

What is the process by which a liquid becomes a gas?

• evaporation

• condensation

• precipitation

• absorption

A group of students weighed a sealed jar full of heavy cream. Then they shook the jar until the cream separated, and then they weighed the jar again. Which of the following would best describe its weight?

• The jar will have gained weight because some liquid changed to a solid.

• The jar will have gained weight because shaking added energy to it.

• The jar will have lost weight because of friction from shaking the liquid.

• The jar will have kept the same weight because it did not gain or lose any matter.

Which change would result in a new substance being formed?

• sugar dissolving in water

• a glass bottle breaking

• ice melting in a bowl

• a metal can rusting