Hydrosphere

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.

Study the graph below.  What is the dissolved solid that is most commonly found in Earth's oceans?

• calcium
• magnezium
• sulfur
• sodium chloride (salt)

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

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

• capacity
• competence
• permeability
• porosity

Where does most fresh water exist?

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

Which best explains what happens to nutrients in the ocean as a result
of upwelling?

• Upwelling carries nutrients to coral reefs.
• Upwelling carries nutrients to the ocean bottom.
• Upwelling carries nutrients to the intertidal zone.
• Upwelling carries nutrients to the surface of the ocean.

How much of the earth's water is freshwater?

• 50 %
• 3 %
• 97 %
• 93 %

Ocean's cover what percent of the Earth's surface?

• 70 %
• 60 %
• 10 %
• none of the above

Aquifers store ____ water.

• ground
• lake 
• ocean
• glacier

What type of water would have the greatest density?

• cold, low salinity

• cold, high salinity

• warm, high salinity

• cold, low salinity