Unit 2: Water Cycle and Properties

What is the process called when water vapor cools and changes back into liquid droplets?

• Evaporation

• Condensation

• Precipitation

• Transpiration

Which stage of the water cycle involves water moving from plants to the atmosphere?

• Evaporation

• Condensation

• Transpiration

• Precipitation

What is the primary force that drives the water cycle?

• Wind

• Gravity

• Solar energy

• Earth's rotation

Which property of water allows it to dissolve many substances?

• Cohesion

• Adhesion

• Universal solvent

• Surface tension

What is the term for water that flows over the ground surface and into bodies of water?

• Infiltration

• Runoff

• Percolation

• Transpiration

Explain why ice floats on water.

• Ice is denser than water.

• Ice has a lower density than water.

• Ice is heavier than water.

• Ice has more mass than water.

Describe how the property of cohesion affects water droplets.

• It causes water droplets to spread out.

• It causes water droplets to stick together.

• It causes water droplets to evaporate quickly.

• It causes water droplets to freeze.

Which stage of the water cycle is directly responsible for cloud formation?

• Evaporation

• Condensation

• Precipitation

• Transpiration

What happens to water molecules during evaporation?

• They lose energy and move closer together and condense

• They gain energy and move farther apart to become a gas.

• They lose energy and form a solid.

• They gain energy and form a liquid.

How does the property of surface tension benefit living organisms?

• It allows insects to walk on water.

• It prevents water from evaporating.

• It increases the density of water.

• It decreases the boiling point of water.