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.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

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

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

Tags

NGSS.MS-PS1-2

Salinity is applied to 

• Warm water
• Ice water
• Fresh water
• Sea water

How much of the earth's water is freshwater?

• 50 %
• 3 %
• 97 %
• 93 %

Tags

NGSS.MS-ESS2-4

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

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

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

• 3%
• 23%
• 77%
• 97%

All the water on, in , and surrounding the earth

• Atmosphere
• Hydrosphere
• Biosphere
• Lithosphere

Tags

NGSS.MS-ESS2-4

This diagram models how toxic runoff can pollute a stream and also

• produce acid rain.
• cause soil erosion.
• create algae blooms.
• pollute groundwater.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

The process that cycles water around Earth and it's atmosphere is called 

• The Natural Cycle
• The Carbon Cycle
• The Water Cycle

Tags

NGSS.MS-ESS2-4

Earth is what kind of system?

• Closed

• Open