SC 7 N 1 2

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

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-LS2-3

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

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

• 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-LS2-1

NGSS.MS-LS2-4

Which best explains why a scientist would use nets to capture and count organisms in a river?

• to measure pH

• to measure turbidity

• to measure biodiversity

• to measure temperature

Tags

NGSS.MS-LS2-5

What does pH measure?

• acidity/alkalinity

• dissolved oxygen

• nutrient level

• turbidity

Tags

NGSS.MS-PS1-2

Which organism would make a good bioindicator?

• an organism that is endangered

• an organism that is tolerant of slight physical or chemical changes

• an organism that has reached its carrying capacity in the ecosystem

• an organism that is not sensitive to slight physical or chemical changes

Tags

NGSS.MS-LS2-5

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.

• 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-LS2-3

NGSS.MS-LS2-4

The scientific method is a process of solving problems in a systematic manner.

• True

• False

Tags

NGSS.MS-PS2-2

Experimenting is a way to test if the hypothesis answers the problem.

• True

• False

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

NGSS.MS-PS1-2