During this science lesson we were learning about how different variables can change the thing you started out with originally. To test this we created a cotton ball launcher. To find out how to create one watch the video bellow. We put some tape down on the carpet then marked a line on the tape every thirty cm, we then lined up at the beginning of the tape and shot our launchers and saw how far we got along the tape. The highest I got was one hundred and twenty cm. The highest scored in the class was one hundred and fifty cm, which Carter and Ruby got.
I observed that a good way to make your cotton ball go further was to make the inside roll longer that the outside one. Another good thing to do was to put tape or a piece of paper across the part that you would put the cotton ball, that way the cotton didn't get stuck on the rough edges of the paper.
In future I think a good way to improve the result that I got would be to point the cotton ball launcher a bit higher instead of pointing it horizontally across the room. I think this would improve the experiment because the higher it gets the further it will have to fall and when something falls it doesn't fall straight down it sort of falls across. What other way do you think I could improve?
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