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Science Fair Project On Pineapple Growth
How do Pineapples Grow Best?
Did you know that pineapples can regenerate their roots from their crowns (the leafy green part that you cut off before you eat a pineapple)? It’s true, and this science fair project, which is designed for students in grades 6 to 8, will discover which way is best to grow pineapples: in soil, water, or sand.
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Before you forget, make sure to write your hypothesis. Which media is going to grow the longest pineapple roots? Do you think it's going to be the soil, water, or the sand? You may want to do a little research on the Internet or at the library before making your hypothesis.
For this project you are going to need 12 pineapple crowns, 12 pots, sand, soil, a ruler and fertilizer (for the sand).
Place the soil in three of the pots. Put one crown of the pineapple six inches deep into each of the pots. Repeat this step with the sand and water pineapples. With the water pineapples, you are going to let the crowns sink to the bottom of the pot.
Make sure that each pot has the same access to light, heat, and water. This project is easy, because you are going to be measuring the roots of the plants every week.
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Make sure to record the information into a log. After four weeks, you should be able to see if your hypothesis was right. To show the science fair judges your results you can make a couple of graphs with your results.
What did you guess? You should find that the pineapple crowns that were grown in water had the fastest growth, and those that were grown in potting soil and sand had the slowest. There shouldn't have been much difference in the pineapple crowns grown in soil and sand. Why is growing in water faster than growing in soil or sand? Why aren't more things grown in water?
The key to a successful science fair project is to make sure that you keep all the variables equal. That's really the difficult part of any scientific experiment, especially if you find that your hypothesis is going to be proved wrong. It's okay if your hypothesis that you chose at the beginning of the experiment was wrong. What matters most is that your data can back up the results. If you want even more proof, you could take pictures of the pineapple plants in each group every week, just to show that you were doing everything right. Also, you might want to keep a log of when you watered the plants, how much light they got and so on, just to keep the experiment as unbiased as possible.
Science Fair Ideas
101 Easy Science Projects
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