The document describes the water cycle. Water moves between the atmosphere, land, oceans, and living things in a cyclic process. It changes state between liquid, solid, and gas as it moves through this cycle, absorbing or releasing energy during changes of state. Water reaches the atmosphere through evaporation, transpiration, and sublimation and returns to the surface as precipitation, where it runs off into streams or soaks into the ground.

1. Unit 4 Lesson 1 The Water Cycle
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2. Unit 4 Lesson 1 The Water Cycle
Indiana Standards
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• 8.2.1 Recognize and demonstrate how the sun’s
energy drives convection in the atmosphere and in
bodies of water, which results in ocean currents
and weather patterns.
• 8.2.2 Describe and model how water moves
through the earth’s crust, atmosphere, and oceans
in a cyclic way, as liquid, vapor, and solid.

3. What Goes Up …
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What is the water cycle?
• Movement of water between the atmosphere,
land, ocean, and living things make up the water
cycle.
• Water and snow moves downward due to gravity.
Water vapor moves upward.
Unit 4 Lesson 1 The Water Cycle

4. How does water change state?
• Water on Earth is found as a liquid, solid, or gas.
• Water absorbs energy as it melts from solid to
liquid.
• Water absorbs energy as it evaporates from liquid
to gas.
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Unit 4 Lesson 1 The Water Cycle

5. How does water change state?
• Water releases energy when it condenses from
gas to liquid or when it sublimates from solid to
gas.
• Water releases energy as it freezes from liquid to
solid or deposits from gas to solid.
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Unit 4 Lesson 1 The Water Cycle

6. How does water reach the atmosphere?
• Water reaches the atmosphere through
evaporation, transpiration, and sublimation.
• Evaporation occurs when liquid water changes to
water vapor.
• Most evaporation comes from Earth’s oceans.
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Unit 4 Lesson 1 The Water Cycle

7. How does water reach the atmosphere?
• Transpiration is the release of water vapor into
the atmosphere by plants.
• Sublimation is when solid water changes directly
to water vapor without first becoming a liquid.
• Sublimation can occur when dry air blows over ice
or snow.
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Unit 4 Lesson 1 The Water Cycle

8. How does water reach the atmosphere?
• Rank the letters A, B, and C according to the
amount of water each releases into the
atmosphere.
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Unit 4 Lesson 1 The Water Cycle

9. What happens to water in the
atmosphere?
• Condensation is the change of state from gas to
liquid.
• Condensation can occur as clouds, fog, or mist, or
on the ground as dew.
• Precipitation is any form of water that falls to
Earth from clouds.
• Rain, snow, and hail are forms of precipitation.
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Unit 4 Lesson 1 The Water Cycle

10. How does water move on land and in
the oceans?
• Water that flows over land and into streams and
rivers is called runoff.
• Water seeps into the ground through infiltration.
• Water underground is called groundwater.
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Unit 4 Lesson 1 The Water Cycle

11. How does water move on land and in
the oceans?
• Glaciers flow downhill and sometimes flow into the
ocean.
• Winds move ocean water on the surface long
distances.
• Cold or salty water will sink in the ocean, forming
deep ocean currents that move large amounts of
water.
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Unit 4 Lesson 1 The Water Cycle

12. Water Works
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What does the water cycle transport?
• The water cycle moves energy and matter.
• Energy is transported by changes in state and by
the movement of water from place to place.
• Matter is transported by the vast amounts of
water that move all around the world.
Unit 4 Lesson 1 The Water Cycle

13. What does the water cycle transport?
• Identify the steps in the water cycle.
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Unit 4 Lesson 1 The Water Cycle