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Photosynthesis - find effects of distance of a light source from pond weed has on the amount of oxygen produced.
Member rating: No Rating | Words: | Submitted: Mon Nov 17 2003
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Photosynthesis Investigation to find effects of distance of a light source from pond weed has on the amount of oxygen produced Photosynthesis All green plants need to be able to make their own food. They do this by a process called photosynthesis. For photosynthesis to occur they need sunlight energy. This energy is absorbed by a green pigment called chlorophyll, which is mainly found in the leaves. This energy then combin Es with water molecules (from the soil) and carbon dioxide (from the air). Then as a result of this, a type of sugar is produced . This is called glucose. Also oxygen is made. For my experiment I have chosen to use light intensity as my variable. This means that to carry out a fair test everything else must be kept the same during the experiment. Hypothesis I think that as the light source (desk lamp) is moved closer to the pondweed, the...
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