Photosynthesis by yaoyufang

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									                 Photosynthesis



                        Objective 2:
   The student will demonstrate an understanding of
                 living systems and the
                      environment.
(7.8) Science concepts. The student knows that complex
interactions occur between matter and energy. The
student is expected to:
  (B) identify that radiant energy from the Sun is transferred
  into chemical energy through the process of photosynthesis.
http://www.homestead-farm.net/art/kidsArt/photosynthesis-color.jpg
             Photosynthesis
• Photosynthesis
  changes light energy
  into food (chemical)
  energy.




                    http://www.eia.doe.gov/kids/energyfacts/source
                        s/renewable/images/photosynthesis1.gif
            Photosynthesis
• Begins with (reactants):
  – Sunlight (radiant energy)

  – Water (from the ground)

  – Carbon dioxide (from the air)
              Photosynthesis
• Ends with (products):
  – Oxygen

  – Glucose
    • Stored chemical energy




                http://curriculum.calstatela.edu/courses/builders/lessons/less/les4/les4gifs/glucose.gif
Photosynthesis
          Reactants                    Products



CO2 + H2O + light  C6H12O6 + O2

 From         Water      Energy               Oxygen
                                    Glucose
the air     taken up   (sunlight)
                                    Energy
            by roots
                                     Fuel
http://www.tomatosphere.org/EngManual/images/photo_equation1.jpg

								
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