1. Part I The hydrologic cycle

2.  This is also called the water cycle  It is the recycling of the water between the oceans, land and atmosphere  There are 6 main parts to the water or hydrologic cycle.

3.  Solar Radiation- the sun, the source of energy need for the water cycle  Condensation –is the process by which water transitions from a gas (or vapor) phase into a liquid phase ( cloud)  Precipitation- returns water to the Earth in the form of snow, rain, sleet, hail  Evaporation- returns water to the atmosphere in the form a gas  Transpiration- is the evaporation of water from vegetation  Water storage- place on the earth that water is stored until it is re-evaporated into the atmosphere (lakes, oceans, ice caps)  Infiltration- is water soaking into the ground  Runoff- water flowing along the surface of the earth

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5.  The Earth has a LIMITED supply of water Once we harm the water bad enough we are not able to use it.  Approximately 70-75% of the Earth is covered with water ( salt).  The amount of water that seeps into the ground or runs-along the surface is influenced by: Climate Slope Soil type Rock type Vegetation Land use and degree of saturation

6.  Run- off occurs when: The ground is saturated The slope is too great It is to cold, the ground if frozen When there has been a lot of rain

7.  Ground water is water that is found below the ground  Ground water is filtered as it moved through the rock and soil.

8.  Zone of Aeration -upper soil layers that hold both air and water..  Zone of saturation- layer of soil below the water table where the ground is saturated with water  Water table- The level below which the ground is saturated with water.  Impermeable layer- a layer of solid material, such as rock or clay, which does not allow water to pass through..-

9.  Choose either the picture of the water cycle or the groundwater zone  On pasteboard draw a picture of what you have chosen.  Label and define each of the important parts