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Parachutes Experiment - Abhirath Singh

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  • Essay length: 1031 words
  • Submitted: 01/09/2009
  • Reviewed by: (?) cpdavis
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GCSE Forces and Motion

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3 star(s)

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The first 200 words of this essay...

-Abhirath Singh

9C

Parachutes Experiment

Aim:

1. To determine that the surface area of a parachute can affect the time it takes to travel a calculated distance, and therefore affecting the speed at which it falls.

Hypothesis:

1. The surface area of a parachute affects the time it takes to travel a calculated distance, and the speed at which it falls.

2. Parachutes with a larger surface area will fall slower than ones with a smaller surface area, and will also take a longer time.

Background:

Parachutes are used by people in order to land safely from the air. These parachutes work on the basic law of air resistance. As a parachute opens up, it causes resistance against the air, causing the person using it to slow down. There are several factors that affect the way a parachute falls. These include; weight of user, force of winds blowing against the parachute, direction of winds against the parachute, material of parachute, weather conditions and surface area of parachute. In this experiment we will explore the factor of surface area of the parachute, which affects the way a parachute falls.

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Review of essay

Reviewed by: cpdavis

Rating: 3 star(s)

Response to the question

The writer was able to answer the question to a decent standard, but could have potentially gone into more detail. The writer is able to approach each section of their report to a decent standard, but doesn't exact use the correct terminology (for example, when they mentioned "Materials", this should be the "apparatus"). The writer should have explained in the methodology why they decided to use a flight of stairs for their height and why they didn't do it from say the top of a building.

All data was presented well in a table. However, the graph could have been presented better (in the form of 2 line graphs, where one would represent the time and the other would be the velocity). The analysis and conclusions were simple but got to the point straight away. It was good the writer looked at error modification.

Level of analysis

the language that the writer had used was very basic and could have gone into so much more detail. The writer starts this off with not using the appropriate language for different areas of the experiment ("Materials" instead of "Apparatus"). In addition, the writer should have gone into more analysis in regards to their experiment and why they decided to do particular methods. The graph could have been presented in the form of line graphs. In addition, for the nature of the experiment a preliminary investigation would have been appropriate as it would have given the writer an opportunity to look at the areas which could have been improved for the main investigation.

Quality of writing

As mentioned before, the writer should have presented the graph better and in addition introduce page numbers so that a reader reading the report would be able to follow it well. In addition, spelling and grammar was quite poor and what the reader should do it read through their report line for line to make sure that this situation doesn't occur.

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