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Lesson 6: Earth’s Water Cycle
What is the Water Cycle?The water cycle is the continual
movement of Earth’s water between the land, ocean, and air.
The Water Cycle
Discovery Education Video
1. Evaporation2. Condensation3. Precipitation
4. Collection and Runoff
There are Four Stages to Earth’s Water Cycle:
Evaporation is the process by which the sun’s energy changes water from a liquid
to a gas.
This gas is called water vapor.
This water vapor collects in Earth’s atmosphere to form clouds.
This process is called condensation.
As clouds become heavy from the condensed water vapor, the water will fall
back to earth as rain, snow, or sleet.
These are examples of precipitation.
Precipitation can collect in bodies of water, run off from higher areas of land, or be
absorbed into the ground.
Collection and runoff provide water for life on Earth.
The water cycle is an ongoing process that continues to repeat itself.
Earth’s Water Cycle Key Questions
1. What occurs during each stage of the water cycle?
2. What provides energy for the water cycle? Explain
3. Why is the water cycle necessary for life on Earth?