Unformatted text preview: Name:____________________________________________
Date:__________ Journal Questions
1. Make a hypothesis about which color in the visible spectrum causes the
most plant growth and which color in the visible spectrum causes the least
if the red light shins on the plant then it will grow because the chlorophyll absorbs red wave lengths, if green light shines
on the plat it will not grow as much because the chlorophyll reflects green. 2. How did you test your hypothesis? Which variables did you control in your
experiment and which variable did you change in order to compare your
growth results? i tested my hypothesis by using different lights on different plants. in the experiment we make the amount of light stay the
same but changed the plants be did the experiment on to compare the results. 3. Analyze the results of your experiment. Did your data support your
hypothesis? Explain. If you conducted tests with more than one type of seed,
explain any differences or similarities you found among types of seeds.
the data i got from the experiment showed that blue worked the best but it was also correct because i said that the green
would not work as good as the others 4. What conclusions can you draw about which color in the visible spectrum
causes the most plant growth?
the plant can also absorb blue light and that is why it work so well. 5. Given that white light contains all colors of the spectrum, what growth
results would you expect under white light?
white light will work the best because it will absorb red orange yellow blue and purple light. so the plant will grow faster. Data Table the blue and green lights are the most important to plant growth 20 13 13
16 10 12
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- Fall '14
- Mrs. Sumner