8.E.1.3/1.4 Test practice

Which would MOST LIKELY result in an unhealthy aquatic habitat?

• a decrease in turbidity

• a decrease in nitrates levels

• an increase in water temperature

• an increase in dissolved oxygen levels

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Pure water is neutral. If water is neither an acid nor a base, what is the pH of water?

• 0

• 7

• 10

• 3

Which best describes the relationship between temperature and dissolved oxygen in a lake?

• As temperature increases, dissolved oxygen increases.

• As temperature increases, dissolved oxygen decreases.

• As temperature decreases, dissolved oxygen decreases.

• A change in temperature has no effect on dissolved oxygen.

Tags

NGSS.MS-LS2-4

If a large amount of fertilizer enters a lake, which will most likely happen?

• The fish population in the lake will increase.

• The temperature of the lake water will increase.

• The number of fish dying in the lake will increase.

• he available food supply for the fish in the lake will increase.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which would be the most likely cause of large numbers of fish dying in a stream?

• a lack of nitrogen

• high levels of mercury

• decreased carbon dioxide

• low dissolved oxygen concentration

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which is the greatest impact of large quantities of sediment flowing into North Carolina’s rivers and streams?

• Sediment poisons fish.

• Sediment prevents light from reaching plants, which will lead to eutrophication.

• Sediment interferes with the ability for fish to find mates.

• Sediment increases the depth of rivers and streams, reducing the amount of flowing water.

Tags

NGSS.MS-LS2-4

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

Which best explains why the turbidity increases as water samples are taken closer to the shore?

• 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-LS2-4

NGSS.MS-LS2-3

The measure of how clear or cloudy a substance is

• Salinity

• Bioindicator

• Turbidity

• Eutrophication

The measure of how acidic or basic a substance is

• dissolved oxygen

• salinity

• turbidity

• pH

Bio-indicators

• A measure of how acidic or how basic a liquid is

• An organism used to monitor the health of an ecosystem.

• a chemical that includes nitrogen and oxygen, often used as a fertilizer

• A measure of how turbid a water system is.

Tags

NGSS.MS-LS2-4

NGSS.MS-ESS3-3