Unit 2 Review

What effect does the sun have on surface water?

• It causes it to boil

• It causes it to rain

• It causes it to sink

• It causes it to evaporate

When water vapor is cooled and forms droplets of liquid water

• Condensation

• Evaporation

• Transpiration

• Runoff

Precipitation occurs because 

• the droplets evaporate in the air
• the droplets are too light for the air to hold
• the droplets are too heavy for the air to hold

When water turns into a gas

• condensation 
• evaporation
• precipitation

What is water that flows in rivers and streams into the oceans and lakes?

• evaporating
• condensing
• precipitating
• runoff

What is precipitation?

• Sweat from our bodies on hot days

• Warm rain but not cold snow or sleet

• Gas that we use in furnaces or ovens

• Any form of water that falls from the sky

The process when plants release water vapor from their leaves is called _____________.

• precipitation

• evaporation

• transpiration

• condensation

What step of the water cycle does this picture show?

• Condensation

• Runoff

• Precipitation

• Evaporation

What step of the water cycle does this picture show?

• Condensation

• Runoff

• Precipitation

• Evaporation

What source of energy evaporates the most water from Earth’s surface?

• volcanoes
• the sun
• lightning
• wind