Earth's Water

The continuous movement of water between the atmosphere, the land, the oceans and living things.

• The Nitrogen Cycle

• The Carbon Cycle

• The Water Cycle

• The Phosphorus Cycle

The process by which plants release water vapor into the air through stomata.

• condensation

• evaporation

• transpiration

• cohesion

The change of state from a gas to a liquid.

• condensation

• precipitation

• evaporation

• transpiration

As water changes state, the water either absorbs or releases energy. Which of these changes of state would involve water absorbing energy?

• condensation

• deposition

• evaporation

• freezing

Which of the following is not a way that water reaches Earth’s atmosphere?

• condensation

• evaporation

• sublimation

• transpiration

What percentage of water in Earth is fresh water?

• 0.5

• 3

• 7

• 18

What percentage of water on Earth is salt water?

• 55

• 71

• 84

• 97

The _ is the mixture of gases that surround our planet and is our planet's source for oxygen.

• biosphere

• atmosphere

• geosphere

• cosmosphere

Which one of the following is not a representative of liquid freshwater on Earth?

• fresch groundwater, rivers, and streams

• rivers, swamps, and freshwater lakes

• saline groundwater, ice caps and ground ice

• marshes, fresh groundwater, and soil moisture

Only a small fraction of the water on Earth is fresh water. Use the diagram to answer the question.

Where is MOST of the fresh water on Earth located?

• in underground aquifers

• in polar ice caps

• lakes

• the atmosphere