6.9A,B - VA Watersheds

Bacteria is one of the main pollutants of concern in our watershed. What is the source of most pathogenic (harmful) bacteria that gets into our waters?

• Animal waste products or human sewage

• Sediment or dirt

• Trash

• Fertilizers

Tags

NGSS.MS-LS2-4

Excess nutrients can be harmful to our watershed. Where do excess nutrients, such as nitrogen and phosphorous, typically come from?

• Sediment or dirt
• Trash
• Oil and chemical spills
• Overuse of fertilizers

Tags

NGSS.MS-ESS3-3

How do most pollutants typically get into our watershed?

• Factories dump pollution into creeks and rivers
• All of our wastewater goes into creeks and rivers
• Runoff from heavy rain carries it into creeks and rivers
• Oil spills leak into creeks and rivers

Pet owners should pick up pet waste instead of leaving it on the ground. How can this help protect our watershed?

• It prevents bacteria from getting into our water
• It keeps the water from getting muddy
• It helps the water smell clean
• It prevents certain species of fish from overpopulating

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Excess nutrients in the water can be harmful, because they lead to -

• High levels of sediment

• Pathogenic (disease causing) bacteria

• Low dissolved oxygen levels

• Harmful mutations in fish and frogs

Why should we be concerned with runoff water from neighborhood and city streets that goes into storm drains?

• Excess water in storm drains can host alligators and other dangerous animals

• The water that goes into storm drains can flood houses and businesses

• Water that goes into storm drains isn't usually cleaned before it goes into the watershed

• Water flowing into underground storm drain systems can form caves and cause subsidence

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

One of the most effective ways to prevent soil erosion is to -

• Cover bare soil with concrete or bricks

• Spray fertilizer on the soil

• Plant grasses, shrubs, and trees in the soil

• Put fences around all areas of bare soil

Tags

NGSS.MS-ESS3-3

NGSS.MS-ETS1-1

Which of these choices is a good example of nonpoint source pollution?

• A factory releases harmful liquid chemicals

• A river has high levels of sediment

• A blockage in a sewer system causes an sewage overflow onto the street

• A tanker truck spills 800 gallons of chemicals onto the highway

Which of these choices is a good example of point source pollution?

• An area in the ocean has high levels of nutrients

• A creek has high levels of bacteria

• Plastic trash is floating in the river

• Waste from a coal mine is leaking into a local creek