The Water Cycle

What must occur before clouds can form?

• water vapor must get warmer

• water vapor must lose heat energy

• precipitation must begin to fall and run off

• transpiration must add water vapor to the atmosphere

Which process of the water cycle returns condensed water to the earth's surface?

• evaporation

• precipitation

• transpiration

• condensation

The water cycle includes which processes?

• evaporation, condensation, precipitation

• precipitation, perspiration, mitosis

• metamorphosis, evaporation, respiration

• fixation, decomposition, respiration

Which two processes increase the amount of water vapor in the atmosphere as a result of heat from the sun?

• surface run-off and transpiration

• condensation and precipitation

• evaporation and condensation

• transpiration and evaporation

What happens when the Sun's energy warms ocean water?

• the water collects

• the water evaporates

• the water condenses

• the water precipitates

Which is true about the Sun and Earth?

• Earth gives light and heat energy to the Sun

• Earth gives only heat energy to the Sun

• The Sun gives light and heat energy to Earth

• The Sun gives only light energy to Earth

How do plants contribute to the water cycle?

• Plants cool the air and create condensation

• Plants warm the air and create precipitation

• Plants give off water through transpiration

• Plants give off water in the form of runoff or groundwater

Why is the Sun's energy necessary for the water cycle?

• It is the heat source that turns water into water vapor

• It is the light source that turns water into water vapor

• It is the heat source that turns vapor into water droplets

• It is the light source that turns vapor into water droplets

The sun shines on the lake and water vapor rises from the lake into the atmosphere. The vapor cools and becomes water droplets in the clouds. The droplets return to Earth as rain, snow, or hail in a continuous cycle. Which is the correct sequence for these processes?

• condensation, evaporation, and runoff

• runoff, transpiration, and evaporation

• evaporation, condensation, and precipitation

• precipitation, evaporation, and transpiration

On a hot summer day in North Carolina, Lindsay swims in an outdoor pool for several hours. Once she leaves the pool, her skin immediately begins to dry. Which best explains why her skin dries so quickly?

• condensation

• transpiration

• precipitation

• evaporation