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Edu653watercycle

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  • Transcript

    • 1. Earth Science The Water Cycle
    • 2. Table of Contents
      • The Water Cycle
      • Processes of the Water Cycle
      • Earth’s Reservoirs
      • How We Relate to the Water Cycle
      • Facts About the Water Cycle
      • Summary
      • Bibliography
    • 3. The Water Cycle
      • The water cycle is the unending circulation of the Earth’s water supply. The cycle can start from any point, but we will say the beginning and the end of the cycle will be the ocean.
    • 4. The Water Cycle
    • 5. Processes of the Water Cycle
      • Evaporation
        • Evaporation is the process that changes liquid water to gas and is absorbed into the atmosphere.
      • Condensation
        • Condensation is the process that changes water vapor or steam into liquid water and other forms.
      • Precipitation
        • Precipitation occurs when water droplets in clouds accumulate and fall to the Earth.
      • Runoff
        • Water that is not absorbed into the soil is called runoff.
    • 6. Evaporation
      • Evaporation is the process that changes liquid water to gas and is absorbed into the atmosphere.
        • Sun
          • The sun heats up water and turns it into vapor or steam.
        • Clouds
          • The water vapor or steam that rises into the air becomes a cloud.
    • 7. Condensation
      • Condensation is the process that changes water vapor or steam into liquid water and other forms.
        • Cooling
          • Cooling is one of the factors that work to change water vapor into a liquid state.
        • Clouds
          • In the clouds, water changes into different states of water which can lead to precipitation .
    • 8. Precipitation
      • Precipitation occurs when water droplets in clouds accumulate and fall to the Earth.
        • Rain
          • Rain is water that is condensed from vapor in the atmosphere and falls in drops from clouds.
        • Snow
          • Snow is water vapor in the atmosphere that has frozen into ice crystals and then falls to the ground in the form of flakes.
    • 9. Runoff
      • Water that is not absorbed into the soil and flows on land into surface waters is called runoff .
        • Runoff can flow from mountains and in to rivers, streams, and oceans.
      • Runoff can be collected into reservoirs
        • A reservoir is a lake (natural or artificial) or tank for storing water.
    • 10. Earth’s Reservoirs
      • The Earth has many reservoirs for storing water. Oceans, lakes, rivers, and streams are natural reservoirs. There are also artificial reservoirs such as tanks that are also efficient reservoirs. Most of the Earth’s water is stored in oceans, but the majority of Earth’s freshwater is stored in glaciers.
    • 11.  
    • 12. How We Relate to the Water Cycle
      • We Are Made of Water
      • Amount of Water We Use
      • Graph of Water We’ve Used
    • 13. We Are Made of Water
      • Water is important to all living things; up to 60 percent of the human body is made of water.
      • The cells in our body are full of water. The ability of water to dissolve so many substances, allows our cells to use and break down nutrients, minerals, and chemicals in our bodies.
      • Water can transports waste material out of our bodies.
    • 14. Amount of Water We Use
      • In 1995, the United States used about 341 billion gallons of fresh water each day. To understand the Nation's water use, look at what we use water for everyday…
    • 15. Amount of Water We Have Used
    • 16. Facts About the Water Cycle
      • Michigan was, at one time, covered by glaciers.
      • The Sun is the “battery” in the water cycle.
      • Density is a property of water that changes with its states.
        • When ice cubes float in water, it can be said that ice cubes are less dense than water.
    • 17. Summary of the Water Cycle
      • The water cycle is a balanced system that is unending. Many processes that are involved in the system help to replenish it including condensation, evaporation, precipitation, and runoff. It is important to appreciate the water cycle, but remember to always conserve water.
    • 18. Bibliography
      • Water Cycle. 24 Feb. 2002 <http://www.epa.gov/OGWDW/kids/cycle.html>.
      • Water Science for Schools . 26 Feb. 2002 <http://ga.water.usgs.gov/edu/index.html>.
      • “ Runoff.” Microsoft Encarta . 26 Feb. 2002 <http://encarta.msn.com/reference/>.
      • “ Reservoirs.” Microsoft Encarta. 26 Feb. 2002 <http://encarta.msn.com/reference/>.
      • http://ga.water.usgs.gov/edu/index.html