Water Quality Assessment Concepts

This lesson, supported by the NSF, covers water quality parameters, including physical, chemical, and biological aspects. It explains the Water Quality Index (WQI) and its historical context, focusing on the Cuyahoga River's pollution and the Clean Water Act's impact. The lesson includes hands-on activities and a virtual game to reinforce learning.

What is the main focus of the first part of the lesson?

• Hands-on lab activities

• History of water quality monitoring

• Types of water quality parameters

• Virtual boat game

Which physical property measures how clear the water is?

• Temperature

• Turbidity

• pH

• Dissolved oxygen

What is the typical range of surface water temperatures during summer?

• 25 to 30 degrees Celsius

• 10 to 15 degrees Celsius

• 5 to 10 degrees Celsius

• 18 to 24 degrees Celsius

Which chemical property is a measure of water acidity or alkalinity?

• Nitrates

• Dissolved oxygen

• pH

• Phosphates

What is a common source of increased water acidity in the eastern United States?

• Deforestation

• Acid rain

• Algal blooms

• Thermal pollution

What is the main consequence of excess phosphates in water bodies?

• Higher pH levels

• Increased water temperature

• Fish kills

• Decreased turbidity

What does the presence of E. coli in water indicate?

• Contamination from waste

• High pH levels

• High dissolved oxygen levels

• Low nitrate levels

What historical event helped establish the Environmental Protection Agency?

• The Ohio River restoration

• The burning of the Cuyahoga River

• The Clean Water Act

• The Great Lakes cleanup

What type of pollution is highly regulated and considered a point source?

• Stormwater runoff

• Agricultural runoff

• Industrial waste

• Urban runoff

What does the water quality index (WQI) assess?

• Overall quality of water including ecosystem health

• Only physical properties of water

• Only chemical properties of water

• Only biological properties of water