Bio Experiment Light Intensity
Research question : How does the different light intensity affect the rate of photosynthesis in plants?
Objective : To investigate the relationship between different light intensity (by having the source of light at different distance to the plant discs which is at; 10cm, 15cm, 20cm, 25cm, 30cm, and 35cm ) and rate of photosynthesis of plant.
Introduction : Photosynthesis is the process where light energy is absorbed by green plants to convert the raw materials (carbon dioxide and water) into sugars and oxygen (waste product). This conversion can be summarized into the equation below: Raw materials Products
6CO2 + 6H2O C6H12O6 + 6O2 (light energy) waste product Referring to the above equation, it can be seen that light energy plays the role as the source of energy stimulating the process of photosynthesis. The main pigment that absorbs light energy is chlorophyll which is the green pigment found inside chloroplasts. A green leaf cut out into discs of the same size are used in this experiment. This experiment is carried out to discover how different intensity would affect the rate of photosynthesis.
Hypothesis : As light intensity increases, the rate of photosynthesis increases.
Variables : Variables | Ways of controlling | Independent variable :The distance of the source of light energy to the plant discs (light intensity). | Use different distance in each experiment by measuring using a 1 m ruler. The different distance are 10cm, 15cm, 20cm, 25cm, 30cm, and 35cm. | Dependent variable :Rate of photosynthesis | The rate of photosynthesis in each experiment is calculated by using the formula
Objective : To investigate the relationship between different light intensity (by having the source of light at different distance to the plant discs which is at; 10cm, 15cm, 20cm, 25cm, 30cm, and 35cm ) and rate of photosynthesis of plant.
Introduction : Photosynthesis is the process where light energy is absorbed by green plants to convert the raw materials (carbon dioxide and water) into sugars and oxygen (waste product). This conversion can be summarized into the equation below: Raw materials Products
6CO2 + 6H2O C6H12O6 + 6O2 (light energy) waste product Referring to the above equation, it can be seen that light energy plays the role as the source of energy stimulating the process of photosynthesis. The main pigment that absorbs light energy is chlorophyll which is the green pigment found inside chloroplasts. A green leaf cut out into discs of the same size are used in this experiment. This experiment is carried out to discover how different intensity would affect the rate of photosynthesis.
Hypothesis : As light intensity increases, the rate of photosynthesis increases.
Variables : Variables | Ways of controlling | Independent variable :The distance of the source of light energy to the plant discs (light intensity). | Use different distance in each experiment by measuring using a 1 m ruler. The different distance are 10cm, 15cm, 20cm, 25cm, 30cm, and 35cm. | Dependent variable :Rate of photosynthesis | The rate of photosynthesis in each experiment is calculated by using the formula