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

Fill in the Blank

Who measures water quality?

Fill in the Blank

What type of water is safe to cook with?

Multiple Select

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

• Dissolved oxygen

• Temperature

• Bioindicators

• Salinity

Fill in the Blank

As water temperature increases, it dissolves ___ of the important gases.

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

Fill in the Blank

Water quality is based on three main types of factors: physical, chemical, and ___.

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

Fill in the Blank

pH is measured on a scale from 0 to ___

Multiple Choice

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

• Milk

• Water

• Blood

• Egg White

Fill in the Blank

What is the pH of pure water?

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