• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9
  10. 10
    10
  11. 11
    11
  12. 12
    12
  13. 13
    13
  14. 14
    14
  15. 15
    15
  16. 16
    16

Determine which materials make the best insulators and determine the factors affecting heat loss from a container.

Extracts from this document...

Introduction

* Aim: * To determine which materials make the best insulators. * To determine the factors affecting heat loss from a container. * Fair Test: I must make sure that the tests are fair by being very accurate when measuring the temperatures of the beakers with boiling water in them, so that I end up with results that will indicate which material is the best insulator. In this investigation it is important that I use containers made of the same size, and same shape, with the same volume of water, at the same temperature. This is called 'controlling the variables', which will help me carry out the investigation as accurate as possible. * Theory: The four main types of heat transfer are the following: - Convection involves the movement of molecules and so it can only occur in fluids (liquids and gases), where the molecules can move within the body of the fluid. Convection currents are examples of floating and sinking. When part of a liquid or gas is made warmer than its surroundings it expands and rises because it is less dense. The air next to the icebox in a fridge is cooled and so it contracts. The cold air sinks because it is denser than the warm air below it. This movement of air is called a convection current. A dye in the form of a crystal or an ice cube can be used to see convection currents in water. - Conduction is the main way in which energy transfers take place in solids, but it also applies to liquids and gases. ...read more.

Middle

* Factors to Measure: - Temperature: For every couple of minutes I am going to measure the temperature to see the difference in temperature loss of the water. - Time: I am going to measure the time of how long it takes for the temperature to decrease, to see which material takes the longest to lose its heat energy in around ten minutes. * Trial Data (Preliminary Investigation): To achieve a good range of results, I am going to measure the temperature of hot water in a glass container without it being covered by any materials, to see how much the temperature of the water would fall every two minutes starting from 90�C. I will do the experiment twice, for the first time I am going to pour 100ml of water into the containers and for the second time I am going to pour 200ml of water. Time (min) Temp (�C) 100ml Temp (�C) 200ml Starting Temp 90 90 2 77 84 4 69 78 6 63 74 8 58 67 10 55 64 I will be timing for ten minutes, every two minutes because this provides a good range of results in the first couple of minutes in which the greatest and quickest heat loss occurs. * Apparatus: Below is a list of the equipment that I would need to carry out my experiment: * Five 200ml glass containers * Kettle * Stop clock * Five thermometers * Black paper * Silver * Bubble wrap * Cardboard * Wool * 200ml measuring cylinder * Method: 1. ...read more.

Conclusion

This was like that probably because the wool trapped the heat at that moment, and stopped any heat from flowing through for another two minutes that is why the temperature of the water at four minutes was so close to the temperature at two minutes. This result is anomalous since it looks strange when compared to others. To get more reliable results I probably should have repeated some of the tests like the 100ml test for the cardboard. I should have done all the 100ml tests of the materials on the same day and if I did the 100ml and 200ml tests of the materials on the same day then I would be able to compare the sets of results more accurately. To improve my method I think it will be best to add on it that I should repeat the experiment for the 100ml test and 200ml. As an improvement to my experiment I could have put a corkboard underneath the glass container, as this will have reduced the conduction of heat from the glass container into the table. I think I got a suitable range of results because they show how the test can be improved and what made the differences between the results. If I took more results down then I would have more points for each insulator and that would have made a better and more accurate graph. There is a pattern in my results because the results on the graph are all in a curve, and it is not only true for the range of values that I used and the pattern would continue beyond this range. 1 ...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. My investigation is to find out the rate of which heat transfer happens. Heat ...

    It will take its place and the process is repeated. This results in currents of rising warm fluid and falling cooler fluids. This can be shown I a heater system. Radiation: Radiation is when waves travel outwards from a source carrying energy.

  2. Factors Affecting Infiltration Rates

    The graph below is showing a comparison of the two factors. Conclusion: From the graph it is seen that soil near a tree, has infiltrated faster than when near a hedge on all of the three recordings made. The reason for this is that the soil near a tree has roots in them, which absorb a lot of water.

  1. Heat loss in Emperor Penguins.

    71.3 72.7 77.7 3 60.8 69.0 72.3 77.3 4 58.5 68.5 72.0 77.0 5 56.0 67.0 71.5 76.5 6 54.8 65.7 71.5 76.8 7 53.3 64.3 70.3 75.3 8 52.2 63.7 70.5 75.7 9 50.7 62.3 69.3 74.3 10 49.5 61.0 69.2 74.0 11 48.2 59.7 68.3 73.3 12 46.8

  2. Find out what insulator is the best from cotton wool, bubble wrap and plastic ...

    Therefore, conduction or radiation cannot take place. This can not take place because air is trapped into the pockets. The next insulator I think will be good is plastic foam. This is because plastic foam is made from sponge and it has many pores.

  1. In this investigation I will investigate heat loss and heat transfer in different materials ...

    I will investigate also if I use more water will this affect the heat loss. If I use more water will this hold insulate the water more? So overall I will have four sets of results. Factors of the experiment In this experiment there are many different factors that could

  2. Factors affecting Germination

    The soil must be well-drained and aerated and care must be taken no to over-water to prevent the seeds from rotting. If the soil is to be fertilized any past treatments of the soil and the current condition, with specific regards to nutrients, must be given extensive consideration before an appropriate fertilizer can be selected and applied.

  1. An Investigation into Water Loss from Plants.

    However, the masses may change slightly as water may be lost by transpiration through the very little number of stomata on the petiole. Apparatus List * Vaseline: Used to spread over the leaf and block stomata on one certain surface to monitor water loss from the other surface.

  2. Factors Affecting Cooling

    This will make the results more reliably and consistent. I also timed how long the water cooled down in around 5 minutes and that came to around 40-60�C which I thought was fairly suitable. I timed if the temperature would change in 30 second intervals and they did so I

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