Water Pollution and Its Effects

What is the main cause of cultural eutrophication?

• Biological pollution

• Thermal pollution

• Increased sediment levels

• Excess nitrogen and phosphorus

Tags

NGSS.HS-LS2-7

Which type of pollution is caused by disease-causing organisms entering water supplies?

• Biological pollution

• Toxic chemical pollution

• Thermal pollution

• Nutrient pollution

What is a common source of point-source pollution?

• Runoff from farms

• A factory or sewer pipe

• Snowmelt

• Rainwater

How does thermal pollution affect aquatic environments?

• Decreases oxygen levels

• Introduces toxic chemicals

• Increases nutrient levels

• Increases sediment levels

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the primary effect of sediment pollution on aquatic ecosystems?

• Increases oxygen levels

• Decreases water temperature

• Increases photosynthesis rates

• Clouds water and reduces photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-4

Which of the following is a nonpoint source of pollution?

• A wastewater treatment plant

• A chemical spill from a factory

• Runoff from agricultural fields

• A leaking oil tanker

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is the process called when nutrients build up in a body of water, leading to increased algae growth?

• Thermal pollution

• Eutrophication

• Sedimentation

• Biological pollution

Tags

NGSS.MS-LS2-3

Which of the following is a consequence of algal blooms caused by cultural eutrophication?

• Reduced nutrient levels

• Decreased aquatic plant life

• Higher oxygen levels

• Increased sunlight penetration

Tags

NGSS.MS-LS2-4

What is a common method to reduce biological water pollution?

• Using phosphate-free detergents

• Treating water with chemicals to kill pathogens

• Reducing industrial emissions

• Increasing water temperature

Why is it important to regulate industrial processes to control toxic chemical pollution?

• To reduce the risk of cancer and other health problems

• To prevent algal blooms

• To increase sediment levels

• To decrease water temperature

Tags

NGSS.MS-ESS3-3