Hydrology

Only 3% of the water on Earth’s is freshwater about 2% of that water is not available for man’s use.  Why is this?

• its frozen
• its polluted
• its too salty
• its in aquifers

About how much of Earth's surface is covered by water?

• 3 %
• 30 %
• 75 %
• 90 %

Of the water that covers Earth, how much is salt water?

• none
• half
• almost all
• one fourth

Which factor is most important in determining how much groundwater can be stored in underground rock?

• rock's location
• rock's porosity
• rock's hardness
• rock's age

There are many bodies of water in or next to Georgia, including Lake Blackshear and the Atlantic Ocean. What is most likely a difference between the water in Lake Blackshear and the water in the Atlantic Ocean?

• The water in Lake Blackshear is always much colder than the water in the Atlantic Ocean.
• The water in the Atlantic Ocean is part of the water cycle, but the water in the Lake Blackshear is not.
• The water in Lake Blackshear comes from rivers, while the water in the Atlantic Ocean comes from rain. 
• The water in the Atlantic Ocean contains more dissolved salts than the water in Lake Blackshear.

Of all the water on Earth 3% is freshwater.  Which of the following contains the least amount of that freshwater?

• groundwater
• polar ice cap
• lakes and rivers
• glaciers 

During a very hot, dry summer in Georgia the ground water supply decreases because of this what will happen to the rate of flow in the streams of Georgia?

• The rate of flow will increase
• The rate of flow will decrease
• There is no way to tell what will happen to stream rate of flow.
• The rate of flow will remain the same.

Evaporation describes the conversion of liquid water to water vapor. What is transpiration?

• The process by which plants chemosynthesize. 
• .  The process by which plants photosynthesize.
• The process by which plants release oxygen from their leaves.
• The process by which plants release water from their leaves.  

What causes the outside of the windshield of a car to get icy on a cold winter night when there is no rain?

• Moisture comes from inside the car and freezes. 
• Water vapor from the air freezes on the glass.
• Water that is already on the glass freezes.
• Hydrogen and oxygen in the air causes it to freeze.

The salts in the sea come from

• weathering and erosion of rocks. 
• Acid rain
• particles falling from space.
• organisms living in the sea.