![What is a watershed? ,[object Object],[object Object],[object Object],Long Island Sound](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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From Canada to Connecticut: A Journey through the Long Island Sound Watershed
- 1. From Canada to Connecticut: A Journey through the Long Island Sound Watershed
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- 12. A person throwing trash into a river is an example of point source pollution. The trash is being directly introduced into the water by that person. Agricultural runoff including animal waste and fertilizers are examples of non-point source pollution (NPS). Once the waste is carried by water, you cannot pinpoint the exact animal from which it came. NPS pollution occurs over a larger area.
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- 15. Estuary
Hinweis der Redaktion
- Directions Have a class discussion about answers to questions before advancing the slide for the answers. More answers may exist, but we included a few key ones. Talking points Can you think of some negative effects? Introduction of pollution (fertilizer, garbage, smog) that could cause bioaccumulation - i ntroduction of pollution in northern states will move down and can affect southern areas Can you think of positive effects? Salt Marsh/wetlands filtering out pollutants – acts as sponge Rivers/streams carry fresh water to rural/urban areas Coastal/river clean-up event
- Directions: Review each of the states with the students. Talking Points: Point out that the Connecticut River (the large river that starts up in Quebec) can carry fresh water down from the mountains in Canada to the LIS. You may also want to note the many other smaller rivers or tributaries in CT that drain to the LIS.
- Talking Point Water drains from higher elevations to lower ones. High lands are the starting point of the watershed
- Directions The following slides have #’s – Have students guess what parts each represent, then advance the slide to get the answer There are also questions throughout, so answer them before advancing the slide.
- Talking points Note the snow melting and flowing downwards Ask the students what the brown triangles would represent as #1 Ask the students what that blue line would represent as #2
- Directions Have students answer the question before advancing the slide
- Directions Ask students what the animation adding to the main river would represent as #3
- Talking points Tributaries can occur anywhere along the watershed and provide an important habitat for aquatic animals Some animals such as fish use these tributaries as breeding grounds
- Directions ask students what #4 would represent as the areas with more colors and more dense shades of green
- Talking points Point source pollution is introduced at a single location. Another example would be the drainage pipe from a factory being directly discharged into a body of water. Non-point source pollution occurs from an unidentifiable origin. Once the waste from animals and any other pollutants (eg fertilizer) become part of agricultural runoff, they are non-point source because you cannot say for sure which farm or animal the pollution resulted from.
- Talking points Review the definition of estuary directions Have the students answer the questions before advancing the slide
- Directions The following slides have #’s – Have students guess what parts each represent, then advance the slide to get the answer There are also questions throughout, so answer them before advancing the slide.
- Directions Allow discussion time for questions before advancing the slide Talking points Further discuss the effects of large numbers of people living along bodies of water Chances of more pollution or less? What are the positive effects of people along bodies of water? (more clean-ups?)