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Aim
The purpose of this investigation was to find out if changing a helicopter's wing length will affect the helicopter's flight time.
Hypothesis
My hypothesis was that the helicopter's flight time will reduce when we reduce the length of its blades. I think this because when its blades are shortened there is not as much air resistance, so it falls faster.
MethodÂ
The simple method we used was:
1. Grab all your equipment.
2. Make your helicopter.
3. Add the paper clips to the bottom of your helicopter. -Do not add more as this is a controlled variable-
4. To increase reliability hold the helicopter as high above you as you can. -Chose only one person to do this-
5. Get someone on the ground to look at where the helicopter will land, -as to get a very accurate dependent variable- count down from 3 and start the stopwatch as soon as the helicopter starts to drop, and stop it as soon as you see the helicopter touches the ground. -This technique can help reduce parallax error.-
6. Add your results to your table and repeat 2 more times before moving on to testing the next wingspan of the helicopter.
Results
Put all your results in a table. (Example below)
ConclusionÂ
The results on your table will link back to you hypothesis you made at the start.
You can now state whether your hypothesis (prediction) was proven or disproven using the graphs data.
Discussion
I can not think of any ways that my experiment could have been improved because we did a good job of making sure that we thought of everything to make our data as accurate as we could.
I would say that our experiment was quite reliable because our results were quite even because our flight time went down every time we shortened the wingspan.
I would say that we made our experiment very accurate, I say this because we worked hard on reducing reaction time, and reducing parallax error.
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