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Lesson 24 – The Water Cycle

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Read About the Water Cycle

Vocabulary

Read the vocabulary terms to understand the reading better.

A cloud is a large amount of tiny water droplets that float in the sky together.

Condensation is when cool air makes water vapour change back to tiny drops of water.

Evaporation is when water turns from a liquid to a gas.

Hail is balls of ice that form when drops of water freeze together high up in clouds.

Precipitation is water that falls to the Earth in different forms such as rain, snow and hail.

Recycling is the process of taking materials and reusing them.

Sleet is tiny pellets of ice that is sometimes mixed with rain or snow.

Water is a clear liquid that has no taste or smell.

The water cycle is the path that all water follows as it moves around the Earth.

Water vapour is water in gas form.

The Water Cycle

The water on Earth keeps recycling. We call this the water cycle. The water cycle makes sure that we always have water.

Read about the parts of the water cycle.

  1. The Sun heats the water on Earth. Some of the heated water turns into vapour. This is called evaporation. The vapour rises into the air.

  2. The air is cool high in the sky. The cool air makes the vapour change back to tiny drops of water. This is called condensation. The water drops group together. They form a cloud.

  3. The water drops in the cloud become larger as more water condenses. When the cloud gets heavy, the water drops in the cloud fall back to Earth. The water falls as rain, hail, sleet, or snow. These are all forms of precipitation.

  4. The cycle begins again.

To learn more about the water cycle, watch the video by SciShow Kids on Youtube.

Now Show What You Know!

Complete some questions about the reading selection by clicking “Begin Questions” below.