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Water Cycle Unit Study Guide
1. Describe the Carbon-Oxygen Cycle.
2. How is nitrogen made useable by plants and animals in the Nitrogen Cycle?
3. Explain how minerals in rocks are used by plants.
4. Draw the water cycle, label at least 5 parts.
5. Match the definition to the following terms
a. process where liquid water from oceans,
lakes, etc becomes a gas
b. loss of water from the leaves of plants
into the atmosphere
c. as air cools, water vapor collects into tiny
droplets that form clouds
d. moisture (rain, snow, sleet, or hail) falling
from the atmosphere
e. process of water soaking into the soil
6. What is runoff?
7. Name 4 sources of the Earth’s water.
8. What source of water is mostly unusable? What percentage of total water is
9. What is a pollutant?
10. Give an example of a non-point source pollutant and how it can affect aquatic
plants and animals.
11. Give an example of a point source pollutant.
12. What is conservation?
13. List 5 ways that we can conserve water.
14. Match the definition to the following terms:
a. water that is safe to drink
Secondary treatment
Primary treatment
Potable water
b. Organic material removed from
c. Process using bacteria to reduce
nitrates to nitrites
d. most common way is to add chorine
to water to kill organic contaminates
e. large screens that remove rags,
sticks and other large items
f. Bacteria and oxygen are added to
breakdown organic matter
15. Explain what Best Management Practices are.
16. What determines how much of a pesticide should be used?
17. How can pesticides be more environmentally friendly?
18. Describe how we can detect pollution by using state-of-the-art technologies.
19. Match the definition to the following terms:
Zone of aeration
Water table
Zone of saturation
a. a layer of permeable rock through
which water flows freely
b. the top surface of the zone of
c. in an aquifer, where the pores are
full of water
d. water contained in the open spaces,
or pores, or soil and rock
e. in an aquifer, where the pores are
partially filled with water, but
mostly filled with air
20. Describe some difficulties with groundwater clean up.