Hydrosphere Test Review

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.

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NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

How much of the earth's water is freshwater?

• 50 %
• 3 %
• 97 %
• 93 %

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All the water on, in , and surrounding the earth

• Atmosphere
• Hydrosphere
• Biosphere
• Lithosphere

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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.

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NGSS.MS-LS2-4

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Why must humans clean water before using it? 

• Humans are unable to digest untreated river water
• River water is free of any contaminant or pollutants
• Untreated river water is brown and humans prefer clear water
• Clear water may contain contaminants that could harm humans
  

How does the amount of water circulating in the water cycle change?

• The amount of water remains constant
• The amount of water increases each time it rains
• he amount of water decreases and then increases each day
• The amount of water decreases every time evaporation occurs

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NGSS.MS-ESS2-4

NGSS.MS-ESS2-1

How is freshwater treatment different from wastewater treatment?

• Freshwater contains oils and vitamins needed for health

• wastewater is not treated after use to protect the environment

• Wastewater removes pollution to make potable water

• Wastewater is treated after use to protect the environment

Which statement best describes how estuaries are positive environment for animals and plants

• They flood regularly destroying organisms' habitat

• They provide a safe hatchery full of nutrients and food

• They dry up each summer stranding organisms in shallow water

• hold high numbers of predators to feed off young organisms

How is the intertidal zone different from the open ocean environment?

• Conditions in the intertidal zone remain constant
• The intertidal zone's conditions constantly change
  
• The open ocean is the shallowest zone in the ocean
• the conditions in the open ocean change continually

How does mining on the ocean floor negatively affect the surrounding ecosystems?

• High turbidity clog the gills of ocean organisms
  
• Heavy metals in the food chain causing fish to weigh more.
• Increase in suspended solids cover fish make them invisible
• Suspended solids in water blind organisms