Chapter:  Water Table of Contents Section 3:  Recycling Water Section 1:  The Nature of Water Section 2:  Why is water nec...
Water and Life <ul><li>Even more than food, water is critical to your immediate survival. </li></ul><ul><li>About 70 perce...
Water and Life <ul><li>Water molecules are attracted to other polar molecules .  </li></ul><ul><li>Together with cohesion,...
Water and Society— Water for Production <ul><li>Water is used for  processing  and  cooling  during the production  of pap...
Water and Society— Water for Production <ul><li>In general, communities located near  water  are better able to attract  i...
Water and Society— Water for Production Why is water necessary? 2 <ul><li>Agriculture uses </li></ul>used in the United St...
Water and Society— Water for Production Why is water necessary? 2 <ul><li>Irrigation   means piping in water from elsewher...
Water for Transportation <ul><li>Passenger liners  are popular for vacations.  </li></ul>Why is water necessary? 2 <ul><li...
Water for Recreation <ul><li>Many people equate water with  fun —fishing, swimming, scuba diving, waterskiing, and boating...
Water for Recreation Why is water necessary? 2 <ul><li>Sailors, canoeists, kayakers, power boaters, and whitewater rafters...
Water Use <ul><li>Water is a valuable natural resource that must be conserved and protected.  </li></ul>Why is water neces...
Water Use <ul><li>Bodies of water must be clean to support the animals and plants that live in them.  </li></ul>Why is wat...
Water Use Why is water necessary? 2 <ul><li>Oceans  also must be kept clean of pollutants such as oil, chemical and radioa...
Conserving Water <ul><li>Less than one percent of Earth’s water is available for any of the uses described , except for oc...
Conserving Water <ul><li>Much of the water used for irrigation is lost to evaporation.  </li></ul>Why is water necessary? ...
Conserving Water <ul><li>Farmers even use computers in the fight for water conservation.  </li></ul>Why is water necessary...
Conserving Water Why is water necessary? 2 <ul><li>Industries also can conserve water.  </li></ul><ul><li>Companies can tr...
What can you do? <ul><li>You could conserve water in your  shower .  </li></ul>Why is water necessary? 2 <ul><li>Turn the ...
What can you do? Why is water necessary? 2 <ul><li>Do the same while  brushing your teeth  and </li></ul>washing your hand...
What can you do? <ul><li>Low flush  toilets are available that use only 6 L per flush compared to about 19 L per flush for...
Section Check 2 Question 1 What percentage of the human body is composed of water? A. 23% B. 55% C. 70% D. 90% NC: 3.08
Section Check 2 Answer The human body is composed of 70% water.  NC: 3.08
Section Check 2 Answer Water is used in industry, irrigation, transportation, and recreation. (yes…life too.) Question 2 L...
Section Check 2 Question 3 Which uses the most water? And why/how? NC: 3.07
Section Check 2 Answer Agriculture uses the most water because farmers have to use water to grow crops. NC: 3.07
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Chapter 5 S2 - Why is water necessary?

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Why is water necessary?

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  • Chapter 5 S2 - Why is water necessary?

    1. 2. Chapter: Water Table of Contents Section 3: Recycling Water Section 1: The Nature of Water Section 2: Why is water necessary?
    2. 3. Water and Life <ul><li>Even more than food, water is critical to your immediate survival. </li></ul><ul><li>About 70 percent of your body is water. </li></ul><ul><li>It fills and surrounds the cells of your body, enabling many of your body’s processes to occur. </li></ul>Why is water necessary? 2 <ul><li>Water helps move nutrients throughout your body, temperature, eliminate wastes, digest food, and lubricate joints. </li></ul>
    3. 4. Water and Life <ul><li>Water molecules are attracted to other polar molecules . </li></ul><ul><li>Together with cohesion, this provides the capillary action that draws water upward through narrow tubes inside plants stems . </li></ul>Why is water necessary? 2
    4. 5. Water and Society— Water for Production <ul><li>Water is used for processing and cooling during the production of paper, chemicals, steel, and other products. </li></ul><ul><li>Water also is necessary for transporting manufactured goods. </li></ul>Why is water necessary? 2 <ul><li>Mining and refining Earth’s natural resources call for large amounts of water. </li></ul>
    5. 6. Water and Society— Water for Production <ul><li>In general, communities located near water are better able to attract industry and often have the most productive economies . </li></ul>Why is water necessary? 2
    6. 7. Water and Society— Water for Production Why is water necessary? 2 <ul><li>Agriculture uses </li></ul>used in the United States, the largest percentage of any sector. about 41 percent of all the water
    7. 8. Water and Society— Water for Production Why is water necessary? 2 <ul><li>Irrigation means piping in water from elsewhere and using it to grow crops. </li></ul>of this water is used for irrigation of farmland. <ul><li>Most </li></ul>
    8. 9. Water for Transportation <ul><li>Passenger liners are popular for vacations. </li></ul>Why is water necessary? 2 <ul><li>Ferries move people, cars, and freight across bays, straights, and rivers. Big ships often are the most economical way to move large freight within the country or across the ocean. </li></ul>
    9. 10. Water for Recreation <ul><li>Many people equate water with fun —fishing, swimming, scuba diving, waterskiing, and boating. </li></ul>Why is water necessary? 2 <ul><li>Boating provides entertainment for many people. </li></ul>
    10. 11. Water for Recreation Why is water necessary? 2 <ul><li>Sailors, canoeists, kayakers, power boaters, and whitewater rafters all spend recreation time on the water. </li></ul>
    11. 12. Water Use <ul><li>Water is a valuable natural resource that must be conserved and protected. </li></ul>Why is water necessary? 2 <ul><li>Not only is clean water important for use in homes and by society, it is necessary for maintaining the ecological balance in nature. </li></ul><ul><li>Many species of wildlife live in and around bodies of water. </li></ul>
    12. 13. Water Use <ul><li>Bodies of water must be clean to support the animals and plants that live in them. </li></ul>Why is water necessary? 2 <ul><li>If too much pollution enters rivers, lakes, or ponds, wildlife will be harmed. </li></ul>
    13. 14. Water Use Why is water necessary? 2 <ul><li>Oceans also must be kept clean of pollutants such as oil, chemical and radioactive wastes, and litter. </li></ul>
    14. 15. Conserving Water <ul><li>Less than one percent of Earth’s water is available for any of the uses described , except for ocean transportation. </li></ul>Why is water necessary? 2 <ul><li>That’s why it is important to conserve the available freshwater on Earth. </li></ul><ul><li>The careful use and protection of water is called water conservation . </li></ul>
    15. 16. Conserving Water <ul><li>Much of the water used for irrigation is lost to evaporation. </li></ul>Why is water necessary? 2 <ul><li>Better methods can conserve water. </li></ul><ul><li>Instead of flooding fields, farmers can use overhead sprinklers on their crops. </li></ul><ul><li>Some farmers install tubing that slowly drips water directly above the roots of the plants. </li></ul>
    16. 17. Conserving Water <ul><li>Farmers even use computers in the fight for water conservation. </li></ul>Why is water necessary? 2 <ul><li>Sensors installed in the ground and connected to a computer can signal when crops need to be watered. </li></ul><ul><li>In residential and commercial areas, mulching the ground around the plants helps prevent water loss. </li></ul>
    17. 18. Conserving Water Why is water necessary? 2 <ul><li>Industries also can conserve water. </li></ul><ul><li>Companies can treat and recycle the water that is used in industrial plants. </li></ul>
    18. 19. What can you do? <ul><li>You could conserve water in your shower . </li></ul>Why is water necessary? 2 <ul><li>Turn the water off when you are soaping up , then use it just for rinsing . </li></ul><ul><li>How much is this ? For Gallons- divide each number by 3.75. </li></ul>Personal use every day.
    19. 20. What can you do? Why is water necessary? 2 <ul><li>Do the same while brushing your teeth and </li></ul>washing your hands . See whether your home has a low-flow toilet system.
    20. 21. What can you do? <ul><li>Low flush toilets are available that use only 6 L per flush compared to about 19 L per flush for older toilets. </li></ul>Why is water necessary? 2 <ul><li>Some ornamental plants require less water than others. </li></ul><ul><li>Over the course of a year or more, small measures such as these can save large amounts of water. </li></ul>
    21. 22. Section Check 2 Question 1 What percentage of the human body is composed of water? A. 23% B. 55% C. 70% D. 90% NC: 3.08
    22. 23. Section Check 2 Answer The human body is composed of 70% water. NC: 3.08
    23. 24. Section Check 2 Answer Water is used in industry, irrigation, transportation, and recreation. (yes…life too.) Question 2 List some examples of why water is essential on Earth.
    24. 25. Section Check 2 Question 3 Which uses the most water? And why/how? NC: 3.07
    25. 26. Section Check 2 Answer Agriculture uses the most water because farmers have to use water to grow crops. NC: 3.07

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