Water Quality

pollutants entering waterways from a general area, such as runoff from farmland or suburban communities

• Pollution
• Point Source Pollution
• Non-point Source Pollution
• Turbidity

How could pesticides get into lakes and streams?

• too much could be used
• it could be sprayed too close to a stream
• rain could wash pesticides into a stream
• all of the above

pollution from a definable source

• Pollutant
• Pollution
• Non-point Source Pollution
• Point Source Pollution

If gasoline or oil or trash goes into a storm drain in the street, it goes directly...

• to the sewage treatment plant
• into the stream
• to groundwater
• none of the above

presence of abnormally high concentrations of harmful substances in the environment, often put there by people

• Pollution
• Pollutant
• Water Quality
• Turbidity

an area of land that is drained by a specified river or other body of water

• Marsh
• Estuary
• Watershed
• Tidal Pool

Where is most of the freshwater found on Earth?

• lakes
• glaciers
• oceans
• rivers

Water that fills the cracks and spaces in underground soil and rock layers is called

• salt water
• rainwater
• groundwater
• water vapor

Which of the following is an effect of excess fertilizer washing into streams and lakes?

• the pH is too low for plants and animals
• cooler water holds more oxygen
• increased sediment reduces oxygen
• algae "blooms", leading to lower oxygen

Which of the following is NOT a desired effect in streams?

• a pH of about neutral
• low salinity
• high temperature
• low nitrates