McGraw-Hill Science Return to Book List
Lightning
Grade 5
Science Magazine & World of Science
 
Earth and Its Resources, Topic 6: Earth's Water Supply
Water Works
Keyword: WATERWORKS

Did You Know...
If you drank sea water, your body actually would lose water. That's because sea water is so salty, it absorbs water from your body.

 

Drinking Water

Here is a great site about drinking water from the EPA—the Environmental Protection Agency. You'll find an interactive water treatment plant by clicking here.

Questions

  1. What typically makes up the filtration system at a water treatment plant?

  2. What is floc? What does floc do to help clean water?

  3. Name at least three functions that water has inside the human body.

  4.  

Water in the City

A lot of people live in Philadelphia, New York City, Boston, and other large cities. And all those people need water! Where does all that water come from? Visit this site for the answers.

Questions

  1. Name three different kinds of dams. Explain how each works.

  2. What are the two most important steps in keeping drinking water safe?

  3. What is surface runoff?

  4.  

BrainPop: The Water Cycle

Tim and Moby, your cartoon friends at BrainPop, have a movie to show you about the water cycle. Then, click Bob the Lab Rat for an activity, or explore other parts of the site.

Questions

  1. Name three changes that water undergoes in the water cycle.

  2. Name three things we build to store and control our water supply.

  3. If Earth's water supply has been the same for billions of years, why do we need to conserve water?

  4.