Answer Key-Possible answers are listed
1. What is a watershed?
A region or area that drains ultimately to a particular watercourse or
body of water is a watershed.
2. Why are watersheds important?
Possible answers: Humans use the rivers or streams contained in a watershed
for drinking water, irrigation, transportation, industry and recreation.
They provide habitat for plants and animals. The rivers drain into lakes
and into the ocean. They are a beautiful part of the natural world.
3. Name three ways that humans
Possible answers: Farm waste Fertilizers Dams Pollution-chemicals, garbage,
etc. Industrial pollution Levees Transportation (gas, oil, boat motors)
Lawn products-leaves, fertilizers, grass, clippings
4. How are the boundaries of
a watershed determined?
A. Political determinations
B. The elevation of the surrounding area
C. The size of the river
5. What is an artifact?
An artifact is something created by humans usually for a practical purpose.
They are identified as remaining from a certain time period.
6. How much of the world's
drinking water is provided by rivers?
7. What is a topographic map?
A topographic map is a map that shows elevation.
8. List two things that you
could do to protect or improve the health of a watershed.
Possible answers: Pick up garbage. Encourage people to not use phosphorus
in their lawn fertilizers. Plant native plants along the edge of a river
or stream to decrease erosion. Mark storm drains as a reminder to not
dump chemicals. Monitor river quality.
9. How does the quality of
your watershed impact the health of the ocean?
Eventually all streams empty into larger rivers that find their way to
the oceans. If pollution is a problem in your local watershed it will
eventually impact the ocean.
10. What is non-point source
Non-point source pollution is pollution that enters the water from a variety
of sources including homes, farms, streets, and construction sites but
not from a single large industrial source.