Factors That Affect Water Quality

The video discusses the importance of clean water and the factors affecting its quality: physical, chemical, and biological. Physical factors include surface runoff and erosion, which can carry pollutants into water bodies. Chemical factors involve agricultural practices where chemicals used on crops can enter the water cycle. Biological factors include the decomposition of organic matter, which can also impact water quality. Understanding these factors is crucial for protecting drinking water.

What are the three main factors that can affect water quality?

• Physical, chemical, and biological

• Chemical, biological, and geological

• Physical, geological, and atmospheric

• Biological, atmospheric, and chemical

How does surface runoff negatively impact water quality?

• By carrying pollutants to new locations

• By increasing the water's pH level

• By reducing the water's oxygen levels

• By increasing the water temperature

What is a common consequence of erosion on water quality?

• It introduces harmful bacteria

• It transports sediment and pollutants

• It decreases the water's clarity

• It increases the water's salinity

How do agricultural chemicals enter the water cycle?

• Through condensation

• Through evaporation

• Through surface runoff and erosion

• Through direct absorption by water bodies

What natural process contributes to biological factors affecting water quality?

• Evaporation

• Condensation

• Decomposition of plants and animals

• Photosynthesis