1. My Perfect Parachute By Group: 4 (2A) Group Leader: Carlos
Group Members : Umer, Ashley, Angela

2. What is our experiment about ?
This experiment is about making a perfect parachute by testing different variables as well as doing 3 experiments and making more reliable parachutes , to see which variables can affect the performance of the parachute and observe which is the slowest parachute to reach the ground

3. What are the variables ? The variables are : The length of the string
The size of the parachute
The weight of the parachute
The height from which the parachute is dropped
The condition of the weather

4. HOW DID WE DO OUR PARACHUTE ?
The objective was to make the falling speed of the parachute as slow as possible
Did it by testing variables
After each parachute experiments we would try to make the parachute different from the other parachute
To get a different result
So that we could compare the falling speed of each of the parachutes

5. Procedures During the experiment ,we made 3 different parachutes
After making each of the parachutes , we would go up to the 5th floor to drop the parachute, from the 5th floor to the podium
Once the parachute is dropped ,we would start our stopwatch and once it landed ,we would stop the stopwatch
After repeating the experiment a few times ,we would do the same for the other parachutes
Them we would estimate the duration of the time of the parachute falling until it lands
Finally we would write down the time results

6. EXPERIMENT #1
In the first experiment , we made a regular parachute as shown in the instruction worksheet and kept the other variables constant.
The first parachute was separated into 2,one made with a bigger plastic bag, and the other one made with a smaller plastic bag
In the end , the bigger parachute was more slower than the smaller parachute to reach the ground
Overall , the bigger parachute was better

7. EXPERIMENT #2
In the second experiment ,we changed the length of the strings
Similar as our first experiment, we made two different parachutes
The first parachute was made with 30cm strings. The second parachute was made with 50cm strings.
Overall, the 50cm string is better, since it made the parachute fly slower

8. EXPERIMENT #3
In the third experiment, we changed the size of the parachute
The first parachute was with 2 rolls of tape
The second parachute was with 1 roll of tape only
Overall, the parachute with 1 roll of tape was better

9. The process of our experiment

10. Record table #1(slower)
Experiment
Number
Parachute
Time to reach ground
(Average fall time)
Observation
EXP #1
Bigger plastic bag parachute
3.17 seconds
The bigger plastic parachute was more slower than the smaller parachute to reach the ground
EXP #2
50cm string parachute
3.08 seconds
Since the 50cm string is longer, it would make the parachute fly slower
EXP #3
Parachute with 1 roll of tape
3.50 seconds
Because the parachute felt a little lighter when we only put 1 roll of tape ,so it flew slower

11. Record table #2(faster)
Experiment
Number
Parachute
Time to reach ground
(Average fall time)
Observation
EXP #1
Small plastic bag parachute
1.97 seconds
The smaller plastic parachute was more slower than the smaller parachute to reach the ground
EXP #2
25cm string parachute
2.04 seconds
Since the 25cm string is shorter, it would make the parachute fly faster to reach the ground
EXP #3
Parachute with 2 rolls of tape
1.81seconds
Because the parachute is a little heavier when we put 2 rolls of tape that’s why it flew faster

12. Conclusion
Overall a perfect should have these variables to have a perfect experiment:
The parachute should have a bigger plastic bag parachute
With longer strings
And less weight
Doing the experiment on a calm day ,not windy

13. This is THE END of our presentation THANK you FOR listenING