Light+Types

We did the trial for each of the light types, but we are thinking of bringing out a new trial because the other plants did not do so well after fall break. Out of the 4 plants, the one under the lamp grew the most and the one in the dark grew the least. The lamp plant had 20cm in height and 8cm in width for the leaves. The one that was in the dark barely reached to beyond the soil. Te one in the dark grew the least because for a good plant to have a good plant life, it needs lots of light, but not so much that it gets burned. The one under the florescent light was about only 1 cm tall. Also, the one in the direct sunlight was about 18cm tall, but it was falling over because the soil was mushy but we out in the same amount of water. We will keep everything the same due to the controlled variables. I think that the plants sort of died because the temperature got too cold in transporting it and it probably got squished. We are also going to keep the same lights, etc

** __Plant Investigation__ ** __The Problem:__ How do plants respond to variation in different types of light or none at all? __Hypothesis: We think that the plant in the sun will grow the tallest because sunlight is natural.__ __Materials: 4 plant holders (plastic cups) 1 halogen lamp, 1 normal lamp, 1 sunny window, water, soil, 4 tomato seeds, dark area.__ __Variables:__ a. Manipulated: __The type and amount of light__ b. Responding: __Height__ c. Controlled:__ Amount of soil, plant holder, same amount of water, same plant, same air,__ __Procedure: 1. Plant 4 seeds in plastic cups 5cm deep. One in sunlight, one in dark area, one under lamp and the other under halogen lamp. Water 1/3 of a cup every 2nd day __ __We forgot to observe for the first 10 days, so we are starting our observations today (day 11):__ __Day 11: We noticed that the plant that is under the lamp has leafs about 8cm wide. That is almost half the total height of that plant.__ __The plant in the direct sunlight was taller than the plant under the lamp, but the leafs are much smaller, it is leaning over, soil is like mush.__

__(add additional days as necessary) Conclusion:__
 * Write a conclusion based on your findings that fulfills the “qualities of a good conclusion” posted on the bulletin board.

Trial 2 On Tuesday October 27th we planted the 2nd trial since then and now (Tuesday November 3) nothing has grown the plants might have germinated but no sign of them coming out of the soil. The reason we did a 2nd trial is because the plant in normal lamp light died because when I used a different lamp on it during the fall break the leaves died and started rolling up then after a while when we came back from fall break the plant died so we did a 2nd trial.-JG

This is a graph of the second trial and my observations for the 2nd trial -JG ** __ Day 1: Date: Tuesday Nov 3 __ __ Today we planted our plants and of course nothing happened yet. __ __ We replanted because over the fall break when I took them home some of them died (not because of the experiment but something else) (The full explanation on why we replanted is in Plant wiki). They most likely died from the cold or well… something… __ __ Day 3: Date: Thursday Nov 5 __ __ So far no plants have grown out of soil but they may have germinated (also not that possible). But its only being 2 days since we planted them so of course they didn’t grow. __ __ Day 5: Date: Monday Nov 9 __ __ Oh wow the sunlight and normal lamp have gone crazy. The sunlight one is already 20 cm tall from the weekend but its leaves aren’t very big though they are 5 cm (length) and 2 cm (width) but bigger than the ones on the plant under the normal lamp which were 2 cm by 1 cm. The plants overall looked healthy: they were green and stood up nicely. The sunlight one seemed to be growing faster because its already taller by 5 cm (Sunlight: 20 cm, Normal Lamp: 15 cm) and the leaves were bigger. The other plants seem to not have grown. __ __ Day 7: Date: Wednesday Nov 11. __ __ There is some growth on the sunlight and the normal lamp. The sunlight one grew about 1 cm in height but the leaves… nothing. For the normal lamp there is a bit more change: the plant grew 1 cm in height but the leaves grew 0.5 cm in length and width. I’m sort of getting a feeling that the others may not grow at all I think I will leave them till Monday next week then I will see if they germinated. __ __ Day 9: Date: Friday Nov 13 __ __ Yay… the plant in the fluorescent light (the classroom light) has germinated, right now its 3 cm tall with no leaves (there are some but they are stuck in between the 2 parts of the seed so we cant measure them). So far the plants look pretty healthy they are green and firm. The others haven’t grown that much either. The one in sunlight’s leaves haven’t grown at all but it grew 2 cm in height. The one under the lamp has grown 7 cm and its leaf length grew 2 cm, while the width has grown 1.5 cm. __ __ Day 11: Date: Monday Nov 15 __ __ Not that much change for the plants except the that the one in fluorescent light grew 17 cm. Its leaves are 4 cm length by 1 cm length. The one in the sun only its leaves grew 0.5 in length. The one under the normal lamp grew 5 cm in height, 2.5 cm in length of leaves and 3 cm in width of leaves. They still all look really healthy practically no difference in color since they germinated… lime green. __