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The Water Cycle
Transcript of The Water Cycle
*Water Cycle: Movement of water between the atmosphere, land, oceans, and even living things.
*Rain and snow fall to the land because of gravity. On land, the water moves downhill. This can form ponds and lakes. Water can then turn into water vapor and move upward and the cycle repeats.
How does water change state?
*Water is found in 3 states on Earth: liquid, solid, and as a gas.
How does water reach the atmosphere?
*Water reaches the atmosphere as water vapor in 3 ways: Evaporation, Transpiration, and Sublimation.
*It takes a lot of energy for liquid or solid water to turn into water vapor.
*Evaporation: When liquid water changes into water vapor. 90% of the water evaporates from the oceans.
*Transpiration: When plants release water into the
*Sublimation: When solid water changes directly
into water vapor without becoming a liquid
What happens to water in the atmosphere?
*Water vapor in the atmosphere changes to a liquid or solid. Then it falls to Earth's surface.
*Condensation: Change of state from a gas to a liquid. This is what creates clouds.
*Precipitation: Any form of water that falls to Earth from clouds. 3 common kinds of precipitation are rain, snow, and hail.
How does water move on land and in the oceans?
*After water falls to Earth, if flows and circulates all over Earth.
*Runoff and Infiltration: All of the water on Earth runs downhill because of gravity.
*Streams and rivers that flow over land are called runoff and flow into oceans and lakes.
*Infiltration is when water seeps into the ground.
*Ice Flow: Much of Earth's ice is stored in large ice caps. Glacier's cover about 10% of Earth's surface.
*Ocean Circulation: Winds move ocean water on the surface in great currents.
*This movement creates deep ocean currents that transports large amounts of water from ocean to ocean.
What does the water cycle transport?
*In the water cycle, each state of water has some energy.
*Therefore, the water cycle moves energy and matter through Earth's atmosphere, land, oceans, and living things.
*Energy: Is transported through changes of state and by the movement of water from place to place.
*This movement of energy is what creates hurricanes.
*Matter: Oceans transport solids, salts, and gases through the oceans all around the world.
*Rivers also carry large amounts of sand, mud, and
gravel and create valleys and canyons.
The Water Cycle
The Water Cycle
What is the water cycle?