Water Quality Review

Which is a bioindicator?

• current

• rock

• insect

• water

Which most likely has the highest number of contaminants in the water?

• A water system with no turbidity

• A water system with low turbidity

• A water system with moderate turbidity

• A water system with high turbidity

Fish living in turbid water may experience which effects?

• Skin damage

• Gill clogs

• Increased swimming ability

• Decreased ability to photosynthesize

Which would most likely cause a sudden increase in nitrates in a waterway?

• Runoff from a farm field

• Runoff from a boat yard

• Spill from an oil tanker

• Discharge from a chemical plant

Which is the most likely result of an increase in the level of nitrates in a body of water?

• Increase in water temperature

• Increase in plant growth

• Increase in fish population

• Increase in pH

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

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

• To measure pH

• To measure turbidity

• To measure temperature

• To measure biodiversity

After analyzing data collected from a pond, there is a significant decrease in dissolved oxygen. Which most likely caused this decline?

• An increase in minerals

• An increase in sediment

• An increase in algae growth

• A decrease in fish population

Which is a point-source of water pollution?

• Acid rain

• Road salt

• Fertilizer runoff

• Oil spill from tanker

An example of non-point-source pollution is:

• Fertilizer runoff from agriculture, golf courses, and lawns

• A leaking oil tank

• Release of sewage from a broken septic tank in a house

• Release of chemicals from a paper mill into a stream

Which water quality indicator can be determined by measuring how light travels through water?

• Dissolved Oxygen

• Temperature

• Turbidity

• Nutrient Level