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Ch. 11.1 Water Cycle Notes Name_____________ Introduction Why is Earth called the “water planet”? Oceans cover nearly __________ of Earth’s surface. Outline of 11.1 I. Water on Earth Most of Earth’s water is _________________ that is found in oceans. Only ____________________. Of that 3% –76% _______________ –.037% atmosphere (water vapor in a gaseous form.) –Some of the Earth’s fresh water is deep underground. –Less than 1% is fresh water available for human use. A. ________________ All Earth’s oceans are connected to form a single world ocean. B. Ice - Artic and Antarctica Icebergs are formed from frozen fresh water. C. __________________ - St. Lawrence Seaway to the Great Lakes D. _____________________ Groundwater - ___________________________________________ __________________________________________________ Far more fresh water is located underground than in all Earth’s rivers and lakes. II. The Water Cycle Water Cycle - ____________________________________________ ___________________________________________________________ ____________. All the water on Earth has been through the water cycle. In the water cycle, water moves from bodies of water, land, and living things on Earth’s surface to the atmosphere and back to Earth’s surface. The ______________________________ that drives the water cycle. A. _____________________ Evaporation - _____________________________________________ ____________________________________________________. Ocean water that evaporates isn’t _______________ because the salt remains in the ocean. Plants Plants take in water by drawing in water form the soil through their roots. Transpiration ____________________________________________. Plants give off a ___________________________ of water. B. Clouds ________________ Condensation - ____________________________________________ ___________________________________________________________ ___________. Water vapor condenses when it travels up in the air because the air is ___________. Cold air holds less water vapor than warm air, so some of the water vapor condenses. C. Water Falls as ___________________ Precipitation ____________________________________________. Precipitation occurs when water droplets in a cloud grow larger and larger. They become so heavy that they fall to Earth. D. Water Falls as ____________________ Most water falls ___________________________ which may stay there for many years. Some water falls _____________________________________. Some water runs off into _______________________________. Some water trickles ____________________________. Precipitation is the source of all _____________________ on and below Earth’s surface. The ____________________________ renews the usable supply of fresh water on Earth. The total amount of water on Earth has remained fairly __________________________.