Water Cycle

What is the energy source for the water cycle?

• the sun
• the earth
• water
• the moon

What part of the water cycle does this picture show?

• condensation
• precipitation
• evaporation

What part of the water cycle does this picture show?

• condensation
• precipitation
• evaporation

What is evaporation?

• The part of the water cycle when the sun heats up water, turning it from a liquid into water vapor or steam. It rises from the ground into the air.
• The part of the water cycle when the water vapor in the air gets cold. The water turns back into a liquid and forms clouds.
• The part of the water cycle when clouds get heavy and can no longer hold the liquid water. This causes the water to fall from the sky to the earth as rain, snow, sleet, or hail.

When water condenses, the water vapor in the air gets ___________ and changes back into liquid.

• cold
• hot
• warm
• solid

Evaporation happens when the sun ___________ water and turns it into vapor.

• cools
• heats up
• freezes
• lights up

What is it called when plants give off water vapor as a waste product?

• condensation
• evaporation
• sublimation
• transpiration

In this stage of the water cycle, water becomes a gas (water vapor).

• evaporation
• run-off
• condensation
• precipitation

Dew also forms directly onto items, as water droplets.  What part of the water cycle is this?

• run-off 
• condensation
• evaporation
• precipitation

Which of the following is the power source for the water cycle? 

• Photosynthesis caused by plants 
• The energy from the sun
• Electrical outlets
• Rain from the clouds