Friday, October 21, 2011

This week in science #3

 This week in science we worked on our plant investigation #2. We setup our experiment , we used three cups ( cup A , cup B, and cup C ). We put the same amount of soil in each cup and put Brassica rapa seeds in side and then poured 50 ML. drops of water. Our testable question that Destiny, samuel and I came up with is : How does the amount sunlight affect Brassica Rapa's height? We put cup B into the sunlight and cup A and C in the dark. On October 17, 2011 our plants grew. Cup B grew, it had leafs and it was green. The other two cups had purple stems and yellow tiny leafs. Our hypothesis was : If I changed the amount of sunlight how will it affect the growth of Brassica rapa ? And so far our outcome is that the cups that didn't get any sunlight don't have its natural color and the cup that got its sunlight which is what all plants need has its color.
   This week I learned that plants that don't get the sunlight they need they change to it's unnatural colors and they grow a certain direction trying to find light. The plants that didn't get any sunlight are tilling over and only have four tiny leafs on the top. I learned that photosynthesis is what makes plants green because it needs the sunlight in order to get its color and in order to grow. That's the reason why cup A and C didn't turn green.

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