Name



Name Date Class

Water on Earth

1. compare and contrast How did the temperature of the water

compare to the temperature of the air in the room?

2. predict Do you think the same result would have occurred with a

glass of warm water? Explain your answer.

3. relate cause and effect How could your observations apply to water

molecules in the air?

4. infer What sort of weather does this experiment model?

Name Date Class

Water on Earth

I get it! Now I know that living things use water

I need extra help with

1a. list What are four main sources of fresh water on Earth?

b. make judgments Which freshwater source do you think is most

important to people? Why?

I get it! Now I know that Earth’s water is found in

I need extra help with

Name Date Class

Water on Earth

2a. identify What are the three major steps in the water cycle?

b. sequence Start with a puddle on a sunny day. How might water move

through the water cycle and actually fall as rain?

I get it! Now I know that the water cycle is

I need extra help with

Name Date Class

Water on Earth

1. Identify two ways in which water is important to living things.

2. What is the percent of fresh water and salt water on Earth and

where is each type found?

The diagram below shows the water cycle. Use the diagram to answer Questions 3–5.

3. What process is shown at point A?

4. What process is shown at point B?

5. What process is shown at point C?

|6. groundwater |7. water cycle |8. transpiration |

Name Date Class

Water on Earth

Evaporation, Precipitation, and Runoff

The diagram below shows the yearly global flow of water through the water cycle. The numbers

represent the amounts of evaporation and precipitation over the oceans and over the land.

1. What is the total amount of global evaporation?

2. What is the total amount of global precipitation?

3. How does the total amount of global precipitation compare to the

total amount of global evaporation?

4. Where does more evaporation occur, from the oceans or from the

land? Explain.

5. Where does more precipitation occur, over the oceans or over the

land? Explain.

6. Do Earth’s oceans gain or lose water, considering evaporation and

precipitation together? How much?

7. Do Earth’s continents gain or lose water, considering evaporation

and precipitation together? How much?

8. Compare the differences in evaporation and precipitation over

Earth’s oceans and land. How are they related?

Name Date Class

Water On Earth

If the statement is true, write true. If the statement is false, change the underlined word

or words to make the statement true.

1. Plants use water, carbon dioxide, and energy to make food in a

process called transpiration.

2. The process by which water falls to Earth as rain, snow, hail, or

sleet is called condensation.

3. In the process of evaporation, water molecules at the surface of

a liquid absorb enough energy to change to a gas called water vapor.

4. In the process of precipitation, water vapor in air cools and

becomes water droplets that clump around particles in air to form clouds.

5. Plants give off water vapor through their leaves in a process

called photosynthesis.

Fill in the blank to complete each statement.

6. About 97 percent of water on is Earth is found in and salt lakes.

7. More freshwater exists as than is found in all of Earth’s rivers

and lakes.

8. The water cycle is driven by energy from the sun and .

9. The place in which an organism lives and obtains the things it needs to survive is its

.

10. Most of Greenland is covered by fresh water that is .

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Inquiry Warm-Up, Where Does the Water Come From?

In the Inquiry Warm-Up, you investigated how condensation appears on a glass. Using

what you learned from that activity, answer the questions below.

Why Is Water Important?

Where is Water Found?

What Is the Water Cycle

Understanding Main Ideas

Answer the following questions on a separate sheet of paper.

Building Vocabulary

On a separate sheet of paper, write a definition for each of these terms.

All the water on Earth flows through the water cycle. Read the passage and look at the

diagram below. Then answer the questions that follow on a separate sheet of paper.

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