Our Photosynthesis Experiment

Aim:

Whether the temperature of the water affects photosynthesis in plants.

Hypothesis:

The plants which absorbs the cold water will have the highest rate of photosynthesis

Approach:

There will be 5 set-ups, including the main control. Each set-ups will have different temperature: Hot(70 Degrees), Cold(5 Degrees), Warm(40 Degrees), Cool(15 degrees), and room temperature(Main control). The calculation of rate of the photosynthesis is by counting the number of bubbles in the set-ups produced by the plants.

Apparatus:

5 Boiling Test tubes, 5 beakers(Able to put the whole flask inside), 5 Funnels(Smaller then beaker), 5 Laboratory Thermometers

Materials:

5 Hydrilla, Tape water, Ice cubes. Boiling Water.

Variable:

Remains constant-Tye of Plant, amount of water, environment, amount of sunlight

Dependent variable- Temperature of water

Procedure:

Your main control set-up should look something like this

Step 1: In the first set-up, boil water and let it cool till the temperature drops to 70 degrees. Pour it into a beaker. The temperature should be 70 degrees. Label the set-up "A"

Step 2: in the next set-up, poured the boiled water and let it cool in the beaker till the temperature is 50 degrees. Label the set-up "B"

Step 3:In the third set-up, put some ice into the beaker of tape water, then measure the temperature. The temperature should be 15 degrees. mark the beaker as beaker "C"

Step 4:In the fourth set-up, repeat the step as stated in step 4. The temperature should be 5 degrees. Mark the beaker as beaker "D"

Step 5:Next, pour tap water into the beaker. Label the beaker "E". This will be the main control set-up

Step 6: Next put a Hydrillas into every funnel

Step 7: Turn the funnel upside down, be careful not to drop the Hydrilla out of the funnel, and slowly deep it into a beaker of water

Step 8:Repeat step 7 for all the hydrilla

Step 9:In 15 minutes, count the number of bubbles coming out of the hydrilla

Step 10:Record the results in a table

Step 11:Draw Conclusion