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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-LS2-4

Which best determines the health of a lake used as a source of freshwater?

• its depth and width

• its temperature and pH

• its location and depth

• its temperature and depth

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.

Tags

NGSS.MS-LS2-3

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.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ETS1-1

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

Tags

NGSS.MS-ESS3-4

The process of plants losing water through their leaves is called ____.

• condensation

• evaporation

• transpiration

• exhaling

What is the process where plant absorbs carbon dioxide and release oxygen ?

• respiration

• transpiration

• combustion

• photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram shows two gases P and Q in a gas cycle. Which of the following are gases P and Q?

• P: Oxygen ; Q: Carbon dioxide

• P: Carbon dioxide; Q: Oxygen

• P: Nitrogen; Q: Carbon dioxide

• P: Nitrogen; Q: Oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What happens to the amount of gases P and Q if all green plants are destroyed?

• P: Increases; Q: Decreases

• P: Increases; Q: Increases

• P: Decreases; Q: Increases

• P: Decreases; Q: Decreases

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

NGSS.MS-LS2-4