ESS.8.3.1 Water Quality

Multiple Choice

Which of the following best describes potable water?

• Water that is safe to drink

• Water that is safe for bathing and cleaning

• Water that is unsafe for any use

• Water that contains dissolved gases

Multiple Select

Which of the following are chemical factors that affect water quality?

• Dissolved oxygen

• Temperature

• Bioindicators

• Salinity

Multiple Choice

Which physical factor of water quality is directly affected by the amount of solid particles suspended in water?

• Temperature

• Turbidity

• Water movement

• Salinity

Multiple Choice

Do you want high or low turbidity in potable water?

• High turbidity

• Low turbidity

• Either is fine

• It does not matter

Multiple Choice

Which of the following is not a physical factor measured for water quality?

• Temperature

• Turbidity

• Water movement

• Nitrates

Multiple Choice

Which of the following is a reason why dissolved oxygen is important in water?

• It helps aquatic organisms survive

• It increases the temperature of water

• It makes water taste better

• It prevents water from freezing

Multiple Select

Which of the following are ways oxygen gets into water?

• Aquatic plants via photosynthesis

• Diffusion with the air from the atmosphere

• Evaporation

• Absorption by rocks

Multiple Choice

Which of the following substances is considered neutral on the pH scale?

• Milk

• Water

• Blood

• Egg White

Multiple Choice

Why can excess nitrates and phosphates in drinking water pose a health risk to humans?

• They make water taste better

• They are essential nutrients for plants

• They can cause harmful effects to human health

• They help clean the water

Multiple Choice

Which of the following is NOT a common source of nitrates in runoff?

• Fertilizer

• Laundry

• Septic tank leakage

• Sewage