Coloured+light

__The Problem:__ How do plants respond to different types of light? What color of light will help the plants grow the most? __Hypothesis:__ I believe that regular light will work the best because it is more natural to the plant than the other colors for the lights and I am pretty sure that the different colors will affect it negatively because they are not as natural to the plants as regular light. = __Kaitlyn's Hypothesis:__ = = I think that the plants will grow the best under the blue light because I think that a blue light will produce the most heat and still give the plant the light it needs. I think that if the plant gets the heat it needs it will grow better. =
 * __Plant Investigation__ **

__Materials:__ -Soil -4 Tomato seeds -4 Styrofoam cups -Red light filter -Green light filter -Blue light filter -4 table lamps __Kaitlyn-Variables:__ a. Manipulated: Different colors of light. b. Responding: Which plant grows the tallest within 30 days.

c. Controlled: Seeds, same soil, same amount of water, type of lamps, type of cups.

__Bryden-Variables:__

a. Manipulated: Different colored filters b. Responding: Does the colored filters affect the plants growth? c. Controlled: Cups, soil, bean seeds, lamps, source of water, place we put the plants, amount of water, amount of light.

Procedure:

1. First, take 4 plastic cups and fill them about ¾ each with soil. 2. Then, plant one tomato seed in each styrofoam cup. 3. Then place each cup under a different color of light and water each with a quarter of a plastic cup. 4. Then wait 2 days and see if they germinate. 5. Every second day, you should water it with a quarter of a plastic cup. 6. Then every 2 days, observe them and measure their height. 7. After 30 days, see which one grew the tallest.

Observations:


 * Date || Green || Blue || Red || Normal ||
 * Oct.2 || 0 cm || 0 cm || 0 cm || 0 cm ||
 * Oct.5 || 0 cm || 0 cm || 0 cm || 0 cm ||
 * Oct.9 || 12.4 cm || 11.5 cm || 8.5 cm || 0 cm ||
 * Oct.21 || 21 cm || 18.3 cm || 19.5 cm || 16.4 cm ||
 * Oct.27 || 23 cm || 21 cm || 23 cm || 30 cm ||
 * Nov.2 || 26.2 cm || 21.2 cm || 29.1 cm || 32.4 cm ||
 * Nov.5 || 28.4 cm || 23.5 cm || 31.1 cm || 33.1 cm ||
 * Nov.10 || 23 cm || 30.4 cm || 30.2 || 38 cm ||
 * Nov.13 || 24 cm || 31 cm || 23 cm || 34 cm ||
 * Nov.16 || 24.3 cm || 31.4 cm || 23.5 cm || 31 cm ||

October 2: We planted the bean seeds into 4 separate cups and watered them.

October 5: There was no growth in each cup. We watered each plant.

October 9: The green light plant grew 12 cm, the one with the red light grew 8 1/2 cm, the one with the blue light grew 11 1/2 cm and the normal light did not grow. The plants under the green, blue and red light had already grown a few leaves. These three plants looked very healthy, they were a light green color and seemed to reach up towards the light the way they grew. The plant under the normal light still had not shown and sign of growth.- Kaitlyn

October 21: The plants look as if they are getting burnt on there leaves there are brown colored blotches. They still look as if the are growing more towards the light. The leaves on the bottom of the plants look healthy and are a bright green color.- Kaitlyn

October 27: Where the plants were burnt by the light it looks as if the spots are crumbling up and are falling. The plants looked as if they are a little low on water as there soil was very dry and the plants were turning a yellow color. I predict that the plants will re gain strength with a bit of water and will soon be healthy. There were 6 leaves on each plant except for the one under the blue light with 7 leaves. The plant under the normal light now measures 30 cm, the plant under the blue light 21 cm, the plants under the green and red light both measure 23 cm. The plant under the normal light was burnt the most I think this happened because the light was brighter and stronger as well the plant was closer to this light. (We moved the plant back to the same spot as the other plants so it wouldn't affect the experiment so much.) This plant under the normal light was so burnt it looked as if the whole leaves were brown. - Kaitlyn October 27: The plants did not grew quite a bit during the month and the green light plant grew 6 cm and now is 23 cm, the red light plant grew 11 cm and now is 23 cm, the blue one grew 12 1/2 from last time and now is 21, and the one that grew the most was the normal light one that grew up to 30 cm. Some leaves got burned and shriveled and they were because they were too close to the lamps. - Bryden

November 2: The plants do not look as if they are doing better, if anything I think they may be doing worse. When you feel the surface of the leaves it is almost like the texture of them are sticky. The plants are now starting to look droopy. The plant that looks the most droopy is the red one, the plant under the green light has completely fell over so I stood it up using two pencil crayons. You can still tell where the plants leaves have been burnt. On the normal colored light plant the spot where it is burnt has flaked off leaving a whole in the middle of the leaf. The color of the plants are a yellow -green color except for the one under the blue light this one looks a darker shade of green. -Kaitlyn

November 5: The plants look like they have grown pretty equally and they look like they are not doing as bad.

November 10: The plants still do not look very well but are getting better. They look like they are perking up a bit and are not as wilted. The one that looks the healthiest is the plant under the blue light is responding the best to the light and healing the best from being burnt. I believe this because this light is not quite as bright and provides an adequate amount of heat. The plant under the normal colored light is growing substantially more than the others. I believe this because it is receiving a great amount of bright light and this light is needed to perform photosynthesis to create food and the more food there is the more the plant grows as long as its needs are met. - Kaitlyn

November 13: The plants do not look very good at all, they look very wilted I have especially noticed this in the green and red light plants. The plants under the normal and blue light are wilting at the top where the leaves are but the whole plant including the stem has not fell over like the others. I think that the plant under the blue light is probably the most healthy I think this because it is catching up to the Normal light plant and is a brighter green color more that the others. The reason that most of the plants have decreased in size is because they are not healthy and wilted. -Kaitlyn

November 16: The plants are dried up really badly. The red light plant's leaves shriveled up and fell off. The tallest one is the blue light plant. At one point it was 38 cm but now it shriveled down to 31 cm. The leaves are mostly light green and a little yellow for the plants.

=
Day 10 November 16: The plants look terrible they all look dried up except for the one under the blue light. The plant under the red light is a badly burnt and now looks like it can’t make a recovery. The plant is completely dried up; the stem is even dry it looks like if you were to touch the plant that it would crumble into pieces. This plant is an ugly light brown color. The plant under the green light looks almost the same as the plant under the red light. The only thing different between the red light and green light plant is that the plant under the green light is a bit longer and its leaves are more dried out. The plant under the normal light is the second healthiest it is still quite long but has defiantly shriveled up a bit. This plant has 5 leaves one of the 5 is a fairly big size. This plant is still slightly green you can especially notice this on the stem. The plant under the blue light is still standing up unlike any others. This plant has 8 healthy leaves and is growing new ones. The plant is a bright but yet dark green color and looks very healthy. On this plant there are 2 leaves that have shriveled up but those are at the bottom of the plant. This plants stem looks quite strong and seems to support the plant well. Kaitlyn======


 * Red Light Green Light Normal Light Blue Light**