SC.8.N.1.5

Turbidity measurements were taken at different distances from the shore of a lake.

• Shoreline erosion causes sediment to wash into the lake.

• Sediment is carried from the middle of the lake to the shore by wind.

• Swimmers stir up sediment by splashing in the water near the shore.

• Fish stir up sediment while feeding on plants that grow close to the shore.

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NGSS.MS-LS2-3

The diagram below shows relative impact of nonpoint source pollution. Which aquatic environment would benefit the most from reduced runoff from lawns treated with fertilizers?

• lakes

• estuaries

• rivers and lakes

• estuaries and lakes

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which best explains why water quality standards have been created to ensure heavy metals in water are kept to a minimum?

• Heavy metals are linked to toxicities in humans and large amounts of heavy metals should not be consumed.

• Heavy metals can stain ceramic surfaces in homes and cost the homeowners hundreds in repairs.

• Heavy metals can cause discoloration of water and can cause a strong unpleasant odor.

• Heavy metals can corrode pipes and cause problems with internal plumbing.

In which oceanic zone do clams and crabs survive by burrowing in the sand?

• Oceanic

• Intertidal

• Deep Ocean

• Open Ocean

How is the amount of oxygen in ocean water affected by temperature?

• The amount of oxygen in ocean water increases as temperature increases.

• The amount of oxygen in ocean water increases as temperature decreases.

• The amount of oxygen in ocean water decreases as temperature decreases.

• The amount of oxygen in ocean water is kept constant as temperature decreases.

Which factors can have the greatest effect on the health of a river system?

• type of soil and salinity

• nitrate levels and turbidity

• human consumption and pH

• natural disasters and tidal changes

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NGSS.MS-ESS3-4

If a body of water has high turbidity levels, what can most likely be concluded?

• It has a low pH.

• It is unsafe to drink.

• It is too hot to drink.

• It contains a lot of chemicals.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What step in the water treatment process involves the removal of sediment?

• aeration

• desalination

• disinfection

• filtration

Which best explains a way of protecting water for human consumption?

• Ban the use of lakes and rivers for recreation.

• Allow dumping of some waste into lakes and rivers.

• Reduce the use on lakes and rivers for irrigation of crops.

• Improve water quality standards for industries located on lakes and rivers.

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NGSS.MS-ETS1-3

The Environmental Protection Agency was assigned which task?

• setting standards and governing the cleanliness of water used by Americans

• setting standards and governing the highways and interstates in the United States

• setting standards and governing the use of national parks and monuments in the United States

• setting standards and governing the civil and commercial air transportation throughout America