Calvert Science Fair

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					                                Calvert Virtual Science Fair
                                    Lab Report Form

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First Name: Hadassah Last Initial: C Grade: sixth

Project Title:
Create a brief, yet descriptive title.

How plants grow differently under different colored lights

State the Problem:
What question(s) are you trying to answer?

I am trying to find out whether plants will grow better or worse under lights with tinting
of different color.

Based on what you know and any previous observations, give a possible answer(s) to
your question(s), or describe a possible solution to the problem. Use a complete sentence.
Make sure your statement can be tested.

I believe that the radishes under the red and blue lights will grow best because the
radishes, being a subterranean plant, get most benefit from heat.

Make a numbered list of all the items used in your experiment.

1       2” by 4” by 6’ wood board
5       light fixtures
1       12’ wire and plug
1       yellow light bulb 25 watts
1       green light bulb 25 watts
1       red light bulb 25 watts
1       blue light bulb 25 watts
1       clear light bulb 25 watts
15      plastic cups
6       22” by 1’ disposable tin pans
1       packet of radishes
1       foot of electrical tape

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Write a paragraph that explains what you did in your experiment. Your procedure should
be written so that someone else could follow your steps and repeat the experiment.

To prepare the experiment, you need a drill with a half inch bit, and a tool that can cut
and remove the insulation from a wire. Drill holes with approximately one and a half feet
between them. Connect the fixtures together with the wire. Stick the wire on one side of
the wood, and the fixtures on the other side. Make the wire pass through the hole in the
wood. Connect the wire to the short segment of wire with the plug using electrical tape.
Go to a dark room that you will not need to access for three weeks. Set the board hanging
from the ceiling. Under it, put three cups, all of them filled with dirt from the same part
of your garden. Plant the seeds however the packet says you should. Put in the light
bulbs, and attach the tins in such a way that the light can’t go from a light to one of the
plants under another light. Water them with an eye dropper, making sure that you give all
of the plants the same amount of water. Check and water them every day. When the
plants reach full maturity, pull the radishes out, and measure them.

Data and Results:
Include tables, charts, graphs, observations, or notes that you make during your lab.
Tables, charts, and graphs should be clearly labeled.

                                                                              Page 2 of 4
-Include a summary of the data to help the reader understand your results.
-Explain why you accept or reject your hypothesis.
-List one thing you learned, and describe how it applies to a real-life situation.
-Discuss possible errors that could have occurred in your experiment.

The white, yellow, and red lights cause plants to grow the best. I believe that this is so
because the radishes have adapted to thrive under the sun, and the lights that are most like
the sun will make them grow best.

I reject my hypothesis, because while the heat of the red and blue light, help the most in
the early stages of development. However, what my hypothesis did not predict was that
when the leaves came out, the blue plants would slack off.

I learned that most plants have optimized growing in the light of the sun, and, when
constructing a plant light, make it as like the sun as possible.

                                                                               Page 3 of 4
My science experiment was flawed, because there was a worm in one of the white plants.
I believe that the worm tilled the soil and allowed the plant to grow more than others.

                                                                          Page 4 of 4

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