Hydrosphere

Study the graph below.  Where is most of the Earth's water located?

• Rivers and Lakes
• Glaciers and Icecaps
• oceans
• groundwater

Why is MOST of the freshwater on Earth not available for our use?

• All freshwater on Earth is easily accessible for use.
• It is frozen in the icecaps and glaciers.
• It is surface water.
• It is underground.

Certain stages of the water cycle are most likely occurring under certain weather conditions.  Which stage is most likely going to occur on a warm, sunny day?

• precipitation
• condensation
• evaporation

Global winds are created by the unequal heating of the earth.  Warm air at the equator rises and cooler air from the poles...

• also rises
• sinks (swoops in to replace hot air)
• never moves and stays at the poles

How much of Earth's water is unavailable for humans to consume due to its high salinity? 

• 3%
• 23%
• 77%
• 97%

The ability of a material to transmit water through interconnected pores is called

• capacity
• competence
• permeability
• porosity

Which describes an estuary?

• A large body of fresh water.
• A large body of salt water.
• The wide, lower course of a river where fresh and salt water mix.

Where does most fresh water exist?

• ice caps, lakes, and streams
• glaciers, rivers, and oceans
• aquifers, ice caps, and glaciers

The change of water from a liquid to a gas.

• evaporation
• precipitation
• condensation
• transpiration

How much of the earth's water is freshwater?

• 50 %
• 3 %
• 97 %
• 93 %