Water Pollution and Watershed Concepts

The video discusses how human activities impact water quality in ecosystems, focusing on the Chesapeake Bay watershed. It explains what a watershed is and how to identify local watersheds using maps. The video highlights the Susquehanna River watershed's role in draining water into the Chesapeake Bay. It details how human activities, such as using fertilizers and pesticides, contribute to pollution, affecting water quality. The video also covers the main sources of pollution, including nitrogen, phosphorus, and sediment, and their consequences, such as oxygen depletion in water bodies.

What is a watershed?

• A large body of water

• A type of pollution

• An area of land drained by a water system

• A type of ecosystem

Which of the following states is NOT part of the Chesapeake Bay watershed?

• New York

• California

• Virginia

• Maryland

How can you determine your local watershed?

• By checking the nearest mountain

• By measuring rainfall in your area

• By finding the nearest stream or creek on a map

• By identifying the largest river nearby

What is the next largest watershed after the local watersheds?

• Colorado River watershed

• Susquehanna River watershed

• Amazon River watershed

• Mississippi River watershed

Why is it important to know your watershed address?

• To locate the nearest park

• To determine the weather patterns

• To understand where pollution in your area ends up

• To find the best fishing spots

Which of the following is a major source of nitrogen pollution?

• Oil spills

• Plastic waste

• Deforestation

• Chemical fertilizers

What effect do fertilizers have on water ecosystems?

• They increase oxygen levels

• They make water clearer

• They cause algae to grow excessively

• They decrease water temperature

What happens when bacteria feed on algae in water?

• They decrease water temperature

• They consume oxygen, reducing its availability

• They increase water clarity

• They produce more algae

Which of the following is NOT a source of phosphorus pollution?

• Agricultural runoff

• Urban runoff

• Industrial emissions

• Natural gas extraction

Why is sediment pollution harmful to water quality?

• It increases water temperature

• It blocks sunlight, affecting aquatic plants

• It reduces water flow

• It increases oxygen levels