Where is most water found on Earth?

• in glaciers
• in lakes
• in rivers
• in oceans

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

• volcanoes
• the sun
• lightning
• wind

What is water doing when it is changed to water vapor?

• evaporating
• condensing
• precipitation
• freezing

What is water vapor doing when it changes to water?

• evaporating
• condensing
• precipitation
• freezing

What controls whether water is a gas, liquid, or solid ice?

• the shape or size of the cup
•  where it has been stored
•  if it is being used for irrigation
• what its temperature is

Where does condensation occur in the water cycle?

• clouds forming
• ocean water changing to water vapor
• water flowing down a river
• underground water soaking into rocks and soil

How can water vapor in the air return to Earth?

• it evaporates and is blown by the wind
• it evaporates and forms clouds
• it condenses then precipitates
• it sticks to any warm surface it comes in contact with

On Which kind of day would you expect the most evaporation from the surface of a pond?

• cold, rainy
• cold, sunny
• warm, rainy
• warm,sunny

Salt water occupies________ of all the water on the Earth.

• 97%
• 96%
• 98%
• 75%

Water in the ocean that contains 3-4% salt is_________.

• salt water
• fresh water
• glacier
• rain water