"Which colors of the light spectrum are most important for plant growth?"
(you can type "Plant Growth McGraw Hill" into search bar)
- Read the summary in the side bar which explains how colors of light affect plant growth.
- Read the procedure. Many of your tasks will be recorded in the journal which you will print out to turn in - there are 5 questions to answer in the journal, use complete, thoughtful sentences for each of these questions.
- You will also record your measurements in the table to be printed and turned in.
*Print your questions and tables to turn in.
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 plant growth?
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?
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.
4. What conclusions can you draw about which color in the visible spectrum causes the most plant growth?
5. Given that white light contains all colors of the spectrum, what growth results would you expect under white light?