​The Spheres of Earth

​Remember the Four Sphere of Earth

They are:

Atmosphere - The air we breath

Biosphere - All living things on Earth

Geosphere - All the land on Earth

Hydrosphere - All the water on Earth​

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​Water Cycle

​What is the Water Cycle?

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• ​It is the continuous movement of water through the Earth's atmosphere, geosphere, and hydrosphere.

• This is the process of water moving ​from the geosphere or hydrosphere to the atmosphere

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​Evaporation/Transpiration

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• ​This is the chemical change of a gas to a liquid

​Condensation

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• Any form of water that falls to Earth's surface from the clouds​

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​Precipitation

​Water Conservation

• Only a small percent of Earth's water is fresh enough to be used by humans.

• To help save water it is important to limit water us​age as much as possible

• Desalination is the process of removing the salt from ocean water

  • This process is very expensive and takes time.