Shared Flashcard Set

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module 5
na
16
Science
8th Grade
10/26/2009

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Cards

Term
What is the Hydrololic cycle?
Definition
The proses by which water is continually exchanges between earths various water sources.
Term
What is condensation?
Definition
The process by which water vapor turns into liquid water.
Term
What is precipitation?
Definition
Water falling from the atmosphere as rain, snow, sleet, or hail.
Term
What is Distillation?
Definition
Evaporation and condensation of a mixture to separate out the mixtures individual components.
Term
What is transpiration?
Definition
Emission of water vapor to plants.
Term
What is residence time?
Definition
The average time a given molecule of water will stay given region of space.
Term
What is salinity?
Definition
A measure of the quantity of dissolved salt in water.
Term
What is firn?
Definition
A dense icy pack of snow.
Term
What is the water table
Definition
The imaginary line between the water saturated soil and the soil not saturated with water.
Term
What is the ocean made of?
Definition
96.5% water, 2.72% sodium cloride, and .78% other
Term
What is percolation?
Definition
The process by which water passes from above the water table to below it.
Term
What is adiabatic cooling?
Definition
The cooling of a gas that happens when the gas expands.
Term
What is cloud condensation nuclei?
Definition
small particles that water vapor condenses on to form clouds.
Term
what type of water takes up the majority of earths water supply, fresh or salt?
Definition
salt
Term
What is the largest source of fresh water on the planet?
Definition
glaciers and icebergs.
Term
what is the largest source of liquid fresh water?
Definition
ground water
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