WATER Celeste Roderno-Desingaño, MS
<ul><li>Exists as solid, liquid and gas </li></ul><ul><li>Most common element on Earth and vital to all living organisms. ...
<ul><li>Pure Water </li></ul><ul><li>Colorless, odorless, tasteless liquid </li></ul><ul><li>Freezing point: 0 ° C </li></...
Properties of Water <ul><li>Molecular Mass – 18g/mole </li></ul><ul><li>Polar molecule – positive and negative charge </li...
Water cycle (Hydrologic Cycle)   The recycling and circulation of water through the biosphere
Hydrologic Cycle <ul><li>Water provides for the needs of living organisms for survival. </li></ul><ul><li>Water is a raw m...
The Processes involved in the Hydrologic Cycle <ul><li>1. Evaporation </li></ul><ul><li>The change of a liquid such as wat...
 
<ul><li>Osmoregulation </li></ul><ul><li>The process that maintains an equable balance of water content in an organism </l...
Osmoregulation <ul><li>Water helps cells maintain their form </li></ul><ul><li>Water dissolves salts, sugars, proteins and...
Osmoregulation <ul><li>Water enables transportation of body wastes </li></ul><ul><li>Water maintains a stable body tempera...
Water…. <ul><li>Water is gained through:  </li></ul><ul><li>Osmosis </li></ul><ul><li>Food </li></ul><ul><li>Respiration <...
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Water

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Water

  1. 1. WATER Celeste Roderno-Desingaño, MS
  2. 2. <ul><li>Exists as solid, liquid and gas </li></ul><ul><li>Most common element on Earth and vital to all living organisms. </li></ul><ul><li>Covers 70% of the Earth’s surface </li></ul><ul><li>Provides a habitat for large numbers of aquatic organisms </li></ul><ul><li>Human body consists of about 65% water. </li></ul>Water (H 2 O)
  3. 3. <ul><li>Pure Water </li></ul><ul><li>Colorless, odorless, tasteless liquid </li></ul><ul><li>Freezing point: 0 ° C </li></ul><ul><li>Boiling point: 100 ° C </li></ul><ul><li>Natural Water </li></ul><ul><li>Never pure and always contains a variety of dissolved substances. </li></ul><ul><li>97% of the Earth’s water is in the oceans </li></ul><ul><li>2% is in the form of snow or ice </li></ul><ul><li>1% fresh water for plants and animals </li></ul>
  4. 4. Properties of Water <ul><li>Molecular Mass – 18g/mole </li></ul><ul><li>Polar molecule – positive and negative charge </li></ul><ul><ul><li>H 2 O = H + and Oˉ </li></ul></ul><ul><li>Provides the medium for metabolic reactions in organic cells and vital for transport of substances around the bodies of organisms </li></ul><ul><li>High specific heat </li></ul><ul><li>Boiling pt. is 100 ° C </li></ul><ul><li>Freezing pt. is 0 ° C </li></ul><ul><li>High surface tension </li></ul>
  5. 5. Water cycle (Hydrologic Cycle) The recycling and circulation of water through the biosphere
  6. 6. Hydrologic Cycle <ul><li>Water provides for the needs of living organisms for survival. </li></ul><ul><li>Water is a raw material in photosynthesis to produce food. </li></ul><ul><li>Domestic uses: drinking, washing, bathing, cooking, used in farms and factories. </li></ul><ul><li>Distribution of water is not uniform. </li></ul>
  7. 7. The Processes involved in the Hydrologic Cycle <ul><li>1. Evaporation </li></ul><ul><li>The change of a liquid such as water to gas caused by sun’s heat. </li></ul><ul><ul><li>Transpiration is the evaporation of water from plants. </li></ul></ul><ul><li>2. Condensation </li></ul><ul><li>The process of changing a gas into liquid when air cools to form clouds. </li></ul><ul><li>3. Precipitation </li></ul><ul><li>Can be in the form of rain, snow or hail </li></ul>
  8. 9. <ul><li>Osmoregulation </li></ul><ul><li>The process that maintains an equable balance of water content in an organism </li></ul>
  9. 10. Osmoregulation <ul><li>Water helps cells maintain their form </li></ul><ul><li>Water dissolves salts, sugars, proteins and substances involved in metabolism and digestion </li></ul>
  10. 11. Osmoregulation <ul><li>Water enables transportation of body wastes </li></ul><ul><li>Water maintains a stable body temperature through perspiration and evaporation </li></ul>
  11. 12. Water…. <ul><li>Water is gained through: </li></ul><ul><li>Osmosis </li></ul><ul><li>Food </li></ul><ul><li>Respiration </li></ul><ul><li>Water is lost due to: </li></ul><ul><li>Evaporation </li></ul><ul><li>Urination </li></ul><ul><li>Bowel movement </li></ul>

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