Water on Earth Review

What must happen for water to move from the ocean to the atmosphere?

• temperature to increase and water to condense

• temperature to decrease and water to condense

• temperature to increase and water to evaporate

• temperature to decrease and water to evaporate

What must happen for water vapor in the atmosphere to change to water droplets and form clouds?

• temperature to increase and water to condense

• temperature to decrease and water to condense

• temperature to increase and water to evaporate

• temperature to decrease and water to evaporate

Most of Earth's freshwater is unavailable because it is _____

• in the atmosphere

• underground

• frozen

• in lakes and rivers

What percentage of Earth's water is saltwater?

• 3%

• 30%

• 70%

• 97%

The amount of precipitation in an area would decrease if there are

• lower temperatures and less evaporation.

• lower temperatures and more evaporation.

• higher temperatures and less evaporation.

• higher temperatures and more evaporation.

Which of the following is NOT an example of evaporation?

• leave a glass of water out and the water level slowly decreases

• wet hair becoming dry after using a hair dryer

• when you take a hot shower and the bathroom mirror fogs or steams up

• water in a pan on the stove disappearing after being heated for a while

Which of the following is NOT an example of condensation?

• water drops forming on the outside of a cold glass

• formation of dew on leaves

• water puddle on the sidewalk disappearing after the Sun comes out

• clouds forming in the air

What causes water to turn to water vapor?

• ocean breezes

• energy from the sun

• moon's gravitational pull

• energy from wind

The driving force behind the how and why water changes phase in the water cycle is

• weather on Earth

• Sun's energy

• Earth's atmosphere

• heat from the core

Most of Earth's freshwater is contained in

• oceans

• rivers

• glaciers

• wetlands