Water Cycle Notes

I. Introduction:

The water cycle is the ______

______

Driven by energy from the ______.

Contains the ______since the formation of the Earth

II. Water Cycle Model:

III. Where can water exist on the Earth?

Clouds

______

Snow

Rain

______

Lake

______

Water Vapor

______

______

* Give 2 more examples of where water could exist on Earth:

______

A. Groundwater

Groundwater is the part of precipitation that ______until it reaches rock material that is saturated with water.

Water in the ground is stored in ______(no, there are no underground rivers or lakes).

Groundwater ______moves underground, generally at a ______(because of gravity), and may eventually seep into ______

______.

IV.Ways that Water Travels through the Water Cycle

______

______

______

______

______

______

A. Evaporation

The sun heats liquid water, causing it to rise into the atmosphere as ______.

Water evaporates directly from oceans, lakes, rivers, falling rain, plants, animals, and other sources where the sun may ______water molecules.

B. Transpiration

Transpiration is ______

______.

Similar to an animal ______(sweating)

C. Infiltration

Infiltration is ______

______.

The rate ______as the soil becomes saturated. If the precipitation rate exceeds the infiltration rate, runoff will usually occur unless there is some physical barrier.

D. Condensation

Condensation takes place when ______and changes into water ______.

You can see the same sort of thing at home... Pour a glass of cold water on a hot day and watch what happens. Water forms on the outside of the glass. That water didn't somehow leak through the glass! It actually came from the air. Water vapor in the warm air, turns back into liquid when it touches the cold glass

E. Precipitation

Precipitation occurs ______. The clouds get heavy and water falls back to the earth.

Precipitation forms in the follow ways:

H

F. Run-off

Precipitation that ______.

______

V. Distribution of Earth’s Water

1. Where is most of the water on earth found? ______

2. What percentage of water on Earth is saltwater?

3. What percentage of water on Earth is fresh drinking water? ______

4. Where most of the Earth’s freshwater located? ______

  1. What percent of fresh drinking water is stuck in glaciers/ice? ______

VII. Pollution of Water

______is the world's biggest health risk, and continues to threaten both quality of life and public health in the United States. When water from rain and melting snow runs off roofs and roads into our rivers, it picks up ______, dirt, trash and disease-carrying organisms along the way.

Many of our water resources also ______, making them vulnerable to pollution from factory farms, industrial plants, and activities like fracking.

This can lead to drinking ______, habitat degradation and beach closures.

*LIST TWO NEW THINGS THAT YOU LEARNED FROM THESE NOTES BELOW*