• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

My aim is to find out what the best design is for a water wheel. The factors that will affect what happens in my investigation are; Surface area of the blades, which are on the wheelSize of those bladesAmount of water used

Extracts from this document...

Introduction

Science Coursework My aim is to find out what the best design is for a water wheel. The factors that will affect what happens in my investigation are; Surface area of the blades, which are on the wheel Size of those blades Amount of water used Size of the water wheel. Weight of the water wheel Height that the water is poured from In order to make is a fair test, I will only change one factor while keeping all the others the same. The factor that I will vary is the amount of water (ml) I pour onto the water wheel. This then will cause the string on the wheel to be wined up quickly. I think that what will happen is that the greater the amount of water poured on the wheel, the faster the wheel will rotate. ...read more.

Middle

By the length of the string wind up, it will determine how fast the wheel spun. To make my investigation safe, I made sure that the plastic blades we safely secure in the wheel. When I finished my investigation I made sure that any spilt water was cleaned up in case someone happened to slip on it and injure him or herself. During my investigation, I found out that the weight of the masses were too heavy to be lift up by the string, which is attached to the end of the wheel. I think this happened because the force of the water wasn't strong enough to cause the wheel to turn with power to wind up the string. However, it was strong enough to wind up a piece of string. ...read more.

Conclusion

By doing these things, it makes my results reliable. As the results, on my table, are close, it proves that the way I carried out my investigation was consistent as the differences between the amounts of string wound up wasn't excessive. In order to improve the accuracy of my result, I would have to resort to an electronic means such as a slotted wheel and a photoelectric cell. This means that the string wouldn't stretch or overlap another coil, which could of happened in my investigation. The only anomaly that I faced was that the masses couldn't be lifted because the force of the water on the wheel wasn't greater enough to overcome the weights. If the diameter of the wheel was bigger than the torque would have been greater and therefore would have been able to life the weights. ?? ?? ?? ?? Pamela Austin Mr Barnes Science set 2 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Green Plants as Organisms essays

  1. Marked by a teacher

    An investigation into the abundance of fresh water black fly larvae, Simuliidae, between pools ...

    4 star(s)

    * A first aid kit and mobile phone should be kept by at least 1 member of the group - If an accident occurs, then first aid is at hand, if the accident is untreatable then the mobile phone can call for assistance or emergency services.

  2. Photosynthesis Investigation

    The formation of oxygen during photosynthesis is of great importance to all living organisms. All living organisms, including plants, carry out respiration, and most of that respiration is aerobic (using oxygen). Photosynthesis is the only way in which oxygen used in respiration is replaced in the air.

  1. Determine the water potential of potato tuber cell with the varying affect of solute ...

    Keeping this variable constant can be done by measuring out with a measuring cylinder the same amount for each solution. "Preliminary work / my scientific knowledge" (Hassan Zaman 2001) The variables that will be taken into account during the experiment are the solution concentration, surface area, solution volume, length of

  2. Investigating the abiotic factors that affect the size of Ivy leaves in shaded and ...

    The enzyme ribulose bisphosphate carboxylase is necessary for this step. The result is a theoretical highly unstable 6-carbon compound which immediately splits to give two molecules of glycerate-3-phosphate (GP), a 3-carbon compound. This is reduced to give glyceraldehyde-3-phosphate (GALP), a 3-carbon sugar.

  1. An Investigation into Species Diversity with distance along a Pingo.

    There will be both interspecific and intraspecific competition for light, which will effect, which plants grow in which areas along the pingo. The scatter graph correlating water content of the soil with SDI showed no correlation this was verified by the spearman's rank test done on the data in which

  2. Osmosis Investigation

    minerals * Keep leaves cool * Enable growth * Form fruits * Produce glucose * Provides support * React with carbon dioxide during photosynthesis. Cell wall - made of cellulose - Freely permeable to all kinds of molecules. - Supports and protects the cell Cell membrane - freely permeable to

  1. Broad Bean Investigation.

    The room temperature I have no control over as it fluctuates the weather is unpredictable so temperature may differ throughout the duration of the investigation. Also due to the hot weather it is likely that the fan I the room will be on so this will change temperature even more affecting the overall outcome.

  2. Yeast Investigation

    I think that this is the biggest variable, as the cells that are used in this process need energy to respire. The cells get this energy from the temperature that they are in.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work