Grade 6 Science – Unit 7: Watershed Systems

A teacher showed her students the watershed model. She asked them to use the model to explain what a watershed is. This is what they said: Annmarie: Watersheds are places where there is a lot of rain. Brandi: I think a watershed is a building that stores water for humans. Camille: I think a watershed is a place where water flows to one area. Dory: I think a watershed is a place that holds underground drinking water. Who had the best definition of a watershed?

• Annmarie

• Brandi

• Camille

• Dory

Tags

NGSS.MS-ESS2-4

How can high turbidity impact an aquatic ecosystem?

• It increases the salinity levels in the water.

• It tells us there are harmful chemicals in the water.

• It reduces sunlight in the water.

• It negatively affects plant growth.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS1-5

Why is it important to test the pH of water?

• Higher pH levels increase the turbidity of the water.

• Lower pH levels indicate the presence of harmful bacteria.

• Extremely high or low pH levels can cause the death of aquatic organisms.

• pH has no impact on the health of aquatic ecosystems.

Tags

NGSS.MS-LS1-5

If macroinvertebrates no longer appear in samples taken from a water source, what could this indicate? (6.8a)

• The water source is polluted.

• The aquatic plants in the water are healthy.

• The pH of the water is in a healthy range.

• The turbidity of the water has not changed.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Are Blue Crabs a biotic or abiotic factor?

• Biotic

• Abiotic

Is sunlight a biotic or abiotic factor?

• Abiotic

• Biotic

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NGSS.MS-LS1-6

Is a dead fish an abiotic or biotic factor?

• Biotic

• Abiotic

Is bay grass a biotic or abiotic factor?

• Biotic

• Abiotic

Are divides and ridgelines a biotic or abiotic factor?

• Abiotic

• Biotic

Is dissolved oxygen a biotic or abiotic factor?

• Abiotic

• Biotic

Tags

NGSS.MS-LS1-5