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

Heat Loss Investigation

Extracts from this document...


Biology Coursework In this experiment, I will test different types of material and how they affect heat loss from the body. The materials I will use are; wool, cotton wool, cotton, felt, foam, polystyrene and newspaper. As it is difficult to accurately measure which materials stop heat loss from the body, I will instead measure heat loss from a conical flask. I will be testing which material insulates the best, and I will keep all the other variables constant. As 36.9�C is quite a low temperature I will use a higher one, 80�C, to test each material. The amount of water, as well as the starting temperature will be kept constant throughout; as will the size and shape of the conical flask. There will be a beaker around the conical flask, holding the insulator, so this test is on a constant volume, rather than mass of insulator. There will also be another flask with no insulator, but with all other variables constant. ...read more.


The reason air insulates is because it is a gas and a) has no free moving electrons and b) its atoms are spread far so it is harder for the heat to radiate. Each material has a different structure and this depends on whether it will insulate or not. For example: Wool has an almost honeycomb structure but these air gaps could be too big so the air will escape. Convection occurs because the air around is heated by the water and becomes less dense and therefore rises. The bung in the top of the flask stops this to a certain extent, however, large air spaces allow convection. Foam, when packed properly, has none of these and should be a good insulator. Radiation occurs through the foam, however, some may be reflected by the white, shiny colour, which best prevents against radiation. In the experiment, after the glass has been heated, the insulator will allow quite rapid heat loss as the insulator and air pockets are warmed. ...read more.


Boil water with a kettle, measure out 200cm� of this water. 2. Add it to a conical flask that is sat in a beaker and surrounded by one of the insulating materials, as shown above. 3. Record the initial temperature and the temperature at one-minute intervals for twenty minutes thereafter. 4. Repeat the steps 1-3 for each insulating material, (including with no material at all - this is the control). 5. Repeat the whole experiment 3 times to eliminate experimental error as much as is possible, and to give a number of readings to take an average from, giving a more accurate set of results. Preliminary Work ???????? ????????????????????? ???? ?? ??????????? ?? ????????? ? ?????? ?? ??????????? ?? ???? ???? ???? ??? Preliminary results prove that an insulated flask keeps the temp drop lower. They also show that Wool was the worst insulator and Foam was the best. Analysis As we can see from the results, all the materials provided some if not a lot of insulation. We can also see that as time increases, temperature decreases but not proportionally. If we look at the results we see that ...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 Resistant Materials 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 Resistant Materials essays

  1. In this investigation I aim to find out which materials are the best insulators. ...

    The results for each material are very similar, and these could have been defined by using a wider time scale to see how effectively heat loss was reduced over a longer period of time. If I were to repeat the experiment I would also do the experiment twice in order

  2. My aim of this experiment is to recognize which material is the greatest sound ...

    I had then connected the sound generator to the mains and switched it on, leaving it at a set frequency of 200 Hz and then keeping the decibel meter ten centimetres away from the box I had measured the sound being produced.

  1. Can heat loss be minimised by using materials such as polystyrene, fur, felt or ...

    We will do this for each material and experiment. Additionally, we will take 2 readings of the each experiment and calculated an average for more accurate results. Variables: Controlled - The amount of hot water will be kept the same at 230ml per test.

  2. Create and sell an accessory collection (starting a small business)

    This is the part I hate the most and I really don't like it because I have problems telling the price, and persuade people to buy. I ask them if there's a possibility of leaving them some of my accessories at their store and if they allow me to do

  1. Find out which is the most effective insulating material out of a range of ...

    I also think that the same theory works with the foam, but the foam has lots of smaller air cells. This theory is being used all over the world in millions of buildings displayed as double-glazing. Double-glazing is usually two or three panes of glass that is held on to the building with a plastic rim.

  2. The task has been set to make a hole punch (used to punch holes ...

    I would therefore have to keep the amount of aluminium (if any) I use, low. Investigation for Key Stage 3 Students It is necessary to carry out an investigation to determine how I should adapt my hole punch to suit the needs of a child between the ages of 11 and 14.

  1. The Progression of the Sail Boat from Past to Present and beyond

    This method of construction is known as Clinker built, but with growing demands was replaced with a more durable and thicker method called Carvel built. This allowed the German Cogs under the Vikings to carry more cargo and be stronger defensively.

  2. Investigation to find the best material to cover a newborn sheep to reduce the ...

    It also has a low density and traps air well like all good heat insulators such as duvets, loft insulating etc. This material is the closest to the sheep's natural coat. Foil - The foil should insulate heat quite well because it is used in cooking where it is wrapped around food that is going in an oven.

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