Matter and How i...

1

Water Cycle
(n) the movement of water through evaporation, condensation, precipitation, and collection.
Why is the water cycle important?
The water cycle is important because water is always moving and being recycled.
Does the water cycle happen in all environments?
Yes, the water cycle happens in all environments, even deserts.

2

Evaporation
(n) the process in which liquid water changes into water vapor.
What causes evaporation?
The heat from the sun causes evaporation.
What does the liquid water turn into?
The liquid water turns into water vapor.

3

Transpiration
(n) the process by which plants release water vapor into the air.
What do plants do with some of the water they use?
Plants release some of the water as water vapor.
Where does that water go next?
The water vapor goes into the atmosphere and continues in the water cycle.

4

Condensation
(n) the process in which water vapor cools and changes into tiny water droplets.
What happens when water vapor cools off?
Water vapor cools off and condenses onto very small particles like dust.
What forms when that happens?
Water droplets form.

5

Precipitation
(n) water that falls from clouds to Earth.
What happens when water droplets or ice crystals become too heavy?
Water droplets or ice crystals become too heavy, and gravity pulls them down.
What can this fall as?
Precipitation can fall as rain, snow, sleet, or hail.

6

Surface Runoff
(n) water that flows over the surface of the land.
What happens to some of the water on land?
Some of the water flows over the surface of the land.
Where does this water flow?
It flows into streams, rivers, lakes, and oceans.

7

Groundwater
(n) water found beneath Earth's surface.
What happens to some of the water on land?
Some of the water seeps into the ground.
Where does this water go underground?
It becomes groundwater below the surface.
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