Effect of colored light bulbs on the germination of seeds Kayla,Ty’kira,Jerome,Deasia

Scientific Question How does the color of the lightbulb affect how seeds germinate and grow ?

Hypothesis If we change the color of the light bulb then we expect that the red light bulb will cause faster growth.

Materials The blue light bulb The white fluorescent light bulb The red light bulb Pearl Millet seeds Bottle Bases Soil Graduated cylinder

Procedures 1Let the seed sit in water for 11 hours (pearl millet) 2 Get a plastic bottle and cut it 3 Get the bottle bases 4 Get scissors and cut the bottle base out of the water bottle 5 Put the fertilizer in the bottle base (125 ml) (x3) (9 bottle bases) 6 Get the pearl millet and push the seed down in the fertilizer 7 Pour 25 ml of water into each bottle base 8 Put three bottle bases under each light bulb 9 Turn the lights on 10 Let the bottle bases have light for 8 hours (8am-4pm) 11 Repeat each step and collect data

Red Light Bulb DaysNumber seeds germinatedPlant growth (cm)Observations 100Very damp soil no growth. 200 The soil is still damp. Nothing grew today. 300 The stems were growing. But it wasn’t long enough to measure. 453cm The plants Growing and sprouting really nice. 584cm The stems are really growing very nice cmSprouting more + getting taller stems.

Blue light bulb Days Number seeds germinated Plant growth (cm) Observations 100Soil still damp. 200 Moisture with a lot of water. 300They’re stems coming in. Only one cup is really progressing. 482cmGetting taller and sprouting more. 5124cm10 seeds germinated. 6157cmStems sprouting more.

White fluroscent light DaysNumber seeds germinatedPlant growth (cm)Observations 100Nothing grew. 200The soil is very damp. 300 They’re barely long stems but they’re coming in really nice cmGrowing + sprouting more cm Most plants started to sprout and the stems of the plants have grown longer. 6164cmA little bit of the stems grown over night.

Data

Results 1)The purpose of this experiment was to test the effects types of lights on seed germination 2)What happen in this data chart is that for a whole week we were trying to see which seed will germinate faster what we did was 3 trials for a week for each light bulb for red bulb the highest germination growth we had was 5.5cm the seeds sprouting more & getting taller. for the blue light bulb the highest germination 7 cm the stems sprouting more For the white light bulb the highest germination 4 cm the seeds is growing a little bit and growing overnight

Conclusion 1)Hypothesis: I think the red light bulb would make the seed growth grow faster and no my hypothesis was not proven 2)The reason why the red light bulb is the better light bulb because it's responsible for making plants flower and produce fruit it's also essential to a plant's early life for seed germination root growth and bulb development instead the blue light bulb is directly related to chlorophyll production also the blue light bulb helps plant grow strong and healthy stems and leaves.

Future Questions How can certain types of light bulb affect the growth on plants and different type of watts? Could we use more colors and different seeds to germinate?

Pictures from our experiment