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

Experiment to find the relationship between the size of the surface area to volume ratio of a container and the rate heat is lost

Extracts from this document...


Experiment to find the relationship between the size of the surface area to volume ratio of a container and the rate heat is lost Biology Sc1: Planning Aim * I am investigating the relationship between heat loss and surface area to volume ratio. The variable I am testing is the surface area to volume ratio by measuring the heat loss of hot water from different sized containers and therefore different surface area to volume ratios. I will investigate the rate of heat loss in the different containers using a thermometer, to test the hypothesis stated below. Variables * The variables: the size of the container, the source of the water, the starting temperature of the water, the room temperature and atmospheric pressure, the shape of the container, the thickness of the glass, the capacity of the container, whether the container has an open top or a bottle neck. ...read more.


This encourages evaporation, the loss of heat through convection, conduction and radiation having increased its surface area to volume ratio again. An opposite example is the dormouse. The dormouse has a large surface area to volume ratio and therefore loses a lot of heat in relation to its much colder habitat compared to the elephant. The mouse must consciously decide to increase its heat by eating more food and increasing its metabolic rate. In humans heat is lost to the air from exposed surfaces of the body by conduction, radiation and convection. Evaporation from the skin takes place all the time and is a cause of heat loss. The body regulates its temperature by internal thermo-regulators losing more heat by vaso-dilation and conserving heat by vaso-constriction; also there are conscious decisions like moving into the shade to keep cool. ...read more.


I filled the first beaker with the hot water, put it on the desk and inserted a thermometer. As soon as this happened I started timing with the stopwatch. For every 15 seconds for the first minute and for each of the following 10 minutes I took the temperature of the water from the thermometer. I recorded the times in a table and repeated the experiment with the same size container again. I poured the water out at the end of the timing into a measuring cylinder in order to measure the volume to let me work out the surface area to volume ratio. I repeated this procedure with the different sized containers, each time taking the water at 90�C and timing for 11 minutes, then recording the volume of water contained. After recording my times in a table I put my data onto a line graph and a bar chart so they could be analysed and conclusions could be drawn. Diagram Patrick Dean 11PWS ...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

Here's what a teacher thought of this essay

3 star(s)

This piece of work is 3 stars because it is firstly incomplete and secondly there are improvements to be made to the method if the results are to be fair. Overall good scientific knowledge in the planning and good knowledge of the variables to control, change and measure. The experiment carried out is not going to answer the exact questions about the effect of SA:Vol ratio on rate of heat loss as they have not mentioned how they will measure this exactly but they will get a set of results about heat loss and volumes/size/shape of the container. They must only change one variable eg the volume, the shapes or the surface area. I recommend doing this with same volumes of 200ml liquid at the same starting temperature but in different shaped containers or different size containers. This experiment changed the volume and size and shape in each stage and in turn did not make this a fair test.

Marked by teacher Patricia McHugh 01/12/2012

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)

    In pools the slow current means a large deposition of silt, the silt can settle in the still water and coat the bottom of the pool, with a layer of silt on the bottom of the pool the black fly larvae, Simuliidae, cannot attach itself to a stone.

  2. Marked by a teacher

    Investigate which surface of a leaf loses more water by transpiration.

    3 star(s)

    leaves 1 & 2 will add up to that of 4, is because leaf 1 has its topside vaselined, preventing transpiration from that surface and leaf 2 has its underside vaselined preventing transpiration from this surface, whereas leaf four has none of its surfaces vaselined so in theory they should add up.

  1. Peer reviewed

    An Investigation into the Effects that Different Light Intensities have on the Speed of ...

    5 star(s)

    This was to ensure that the woodlice were well hydrated before they were used for the experiment. A blank video was then pushed into the video recorder. The 5 woodlice were then placed carefully into the rounded container underneath the light using the plastic spoon to pick them up and the paintbrush to push them in.

  2. Describe a time when you felt disappointed or let down

    In my 10 year old head, it got its name due to ancient nomadic forest dwellers that might have settled here, because they had sufficient space and shelter, it was creatively named "the big tree", crazy.

  1. Experiment to Investigate the Effect of Temperature on the Rate of Photosynthesis in Elodea.

    Another problem with the experiment could have been the Elodea being forced to photosynthesise too much. This could have damaged the plant, more likely at the higher temperatures, and therefore subsequent readings may not demonstrate a true pattern of the rate of photosynthesis at different temperatures.

  2. How Surface Area affects Heat Transfer.

    40 30 40 31 01:00 40 31 40 32 01:15 40 32 40 33 01:30 40 33 40 35 01:45 40 35 40 36 02:00 40 36 40 38 02:15 40 37 40 38 02:30 40 38 40 39 02:45 40 38 39 39 03:00 40 39 03:15 40 39

  1. Conducting an experiment to find out what effect the surface area has on the ...

    From the scientific knowledge, preliminary work and background research I have made the following prediction. Hypothesis: � The rate of water up take is directly proportional to the surface area of the leaves on the plant. As the surface area is reduced the time taken for the water to travel the stem over the same distance will increase.

  2. Elodea experiment

    Get a splint and light your Bunsen burner ensuring that it is on a yellow flame by keeping the air hole closed. Now open the air hole and move the Bunsen burner underneath the beaker. Heat the water in the beaker so that it is 5 c higher than the

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