A plant cannot survive, reproduce, or produce food without sunlight.
how does sunlight affect plant growth? Hypothesis? | …
These examples contain the words, if and then. Formalized hypotheses contain two variables. One is "independent" and the other is "dependent." The independent variable is the one you, the scientist control and the dependent variable is the one that you observe and/or measure the results.
Problem & Hypothesis - Lights! Colors! Plants! Grow!
The 'color' of light (the emission amplitude and spectral distribution) can significantly affect plant growth. Keep in mind, it's not only the visible light, but the UV and infra-red areas in the spectrum - light that is not visible to the human eye. There are 'full spectrum' light bulbs that have been available (at least in the past) for people who wish to provide 'sun equivalent' lighting forplants [and people too] - both plants and people probably grow better :) under this type of balanced light. As an aside, the typical cool white fluorescent lamp emits strongly in the blue and green emission bands (try peeking at one with a prism or spectra scope.) Studies have suggested that fluorescent and other unbalanced bulbs do less than great things of people and plants are exposed to them chronically (prolonged exposure).....including 1. increased incidence of dental caries (cavities), 2. hyperactivity and depression in adults...on and on... To answer your question though, yes, light affects plants. It can inhibit growth, reproduction, and plant health.. ...or help it if the light is right. Regards, Mac
Find a few books written by John Ott. He did some plant and colored light stuff - kinda like you are! :) Cool eh? Then - don't believe everything you read. Do the project yourself! Get some plants, buy some little lights, and away you go. (Psst - go ahead and do the Red, Blue, White, and Yellow - but add a few more lights if you can. A so-called Gro-Light that has some UV in it - and perhaps a standard fluorescent bulb.)
Hypothesis: If I plant the bean in the sunlight and the other in
Step 6: After two weeks record the final heights of the plants in the data table.
By: Sydni Hebert and Alyssa Suvino
This experiment is testing which bean plant out of three will grow the most: the plant placed in sunlight, moonlight or no light.
Bean Plant Growth
Plant Growth Experiments - CORNELL Composting
By the the third week it remained the same at ½ an inch.
Materials: Three bean plant seeds, soil, water, pots(cups), ruler, sunlight, and moonlight.
Step 1: Put soil in three pots(cups).
Step 2: Put bean plant seeds in each pot of soil.
Step 3: Then place one in sunlight, one in moonlight, and one in no light each day.