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

Body Temperature Experiment

Extracts from this document...


Investigating the effect of how size affects heat loss from an object (body) Aim: To investigate the effect of how different sizes affect heat loss from an object and then relating it to the human body. Research Question: Will increasing the size of a beaker increase the amount of heat lost? Hypothesis: I predict that the smallest beaker will lose heat the most; hence having the highest rate of heat loss. I think this because small animals generally lose heat much faster than large animals. "Large animals cool of more slowly" (Endothermy 2008). This is due to their Surface Area: Volume ratio. Larger animals have a larger surface area and volume; hence they lose heat slower than small animals that have a smaller surface area and volume yet the ratios will remain the same. For this reason, I believe that the smallest beaker will lose heat the fastest. Variable: Control: Volume of water Starting temperature of water Room temperature Dependent: The amount of heat lost- the difference in the temperature of water between the starting and end of the experiment over a specific time period. Independent: The size of the beaker in terms of width- this shows the relation between an object and humans. List of Materials: 1. 2 graduated 400ml beaker 2. 1 graduated 200ml beaker 3. ...read more.


Temperature of water (oC) 1st trial 2nd trial 3rd trial 4th trial 5th trial Average 0 62.0 62.0 62.0 62.0 62.0 62.0 2 58.0 59.0 57.0 58.0 59.0 58.2 4 54.0 56.0 52.0 55.0 54.0 54.2 6 51.0 52.0 50.0 51.0 50.0 50.8 8 48.0 48.0 47.0 48.0 46.0 47.4 10 46.0 47.0 45.0 46.0 43.0 45.4 Uncertainty +1 second and uncertainty + 0.1oC Table to show the results of the body temperature experiment for the 400ml beaker Time (mins) Temperature of water (oC) 1st trial 2nd trial 3rd trial 4th trial 5th trial Average 0 62.0 62.0 62.0 62.0 62.0 62.0 2 58.0 57.0 59.0 59.0 57.0 58.0 4 54.0 54.0 55.0 53.0 53.0 53.8 6 50.0 51.0 52.0 49.0 50.0 50.4 8 47.0 47.0 48.0 46.0 47.0 47.0 10 45.0 44.0 43.0 42.0 44.0 43.6 Uncertainty +1 second and uncertainty + 0.1oC Calculations The average for all the beakers was calculated. 125ml Beaker: Average = Total temperature 5 Average = 60 oC +59 oC +60 oC +61 oC +58 oC 5 Average = 59.6oC I used the same formula as above to calculate all the averages for each interval of each beaker. The final results were as below. Time (mins) Temperature of water (oC) 125ml beaker 200ml beaker 400ml beaker 0 62.0 62.0 62.0 2 59.6 58.2 58.0 4 57.0 54.2 53.8 6 54.8 50.8 50.4 8 52.8 47.4 47.0 10 50.8 45.4 43.6 Graph The graph shows the average temperature of water and how it has decreased over a period of ten minutes. ...read more.


Evaluation I felt that my experiment was not a huge success as there were some factors which could have caused the results to fluctuate. Every trial I took, I placed hot water in the beaker straight away. This could have meant that the beakers were all still hot; hence this could have affected the outcome. The room temperature was a key factor as it shows how external heat affects heat loss but this could have changed as I completed this experiment over one and a half hours which is a long time. There was always an uncertainty in the time as when I looked at the time, it was still going on because I did not stop time. For this reason, I could have not seen the temperature at the exact interval. As my results were incorrect, I am able to repeat the experiment by correcting my biggest error. I had taken the same volume of water for all the beakers which meant that the surface areas were not even. This caused the ratio of Surface Area: Volume to differ. To correct this, I would make sure that all the beakers are filled to the rim, ensuring that the surface area: volume ratio is equal. This would mean the surface area would be the entire beaker. Then I would need to measure the dimensions of the beaker in order to find out the surface area using the formula for the area of a cylinder. Below is a diagram of what the improved experiment would look like. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology 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 International Baccalaureate Biology essays

  1. What is the effect of different body positions i.e. lying down, sitting and standing ...

    sitting down and lying down position Sitting Down and Lying Down T-Value 0.53465 Critical Value of t 2.26 Degrees of Freedom 18 Significant No as T-Value ? Critical Value Sitting down and lying down: Null Hypothesis (H0): There is no difference in diastolic pressures for participants in a sitting down and lying down position.

  2. Surface Area to Volume Ratio Simulation Experiment. The comparison between surface area : volume ...

    had the smallest surface area to volume ratio ( 0.6 : 1.0 ) while agar block 5 ( the smallest agar block) had the biggest surface area to volume ratio ( 1.6 : 1.0 ). If the surface area to volume ratio of a cell gets too small, substances will

  1. biology extended essay - How different diets: vegetarian, vegan and a meat centered diet ...

    a year How many days are you absent from school when you have a cold? I still go to school even when I am sick I still go to school even when i am sick I still go to school even when i am sick A day or two I

  2. Biology experiment. Investigating the effect of temperature on the surface tension of water

    1x Hot plate (� 0.05oC) 1x Pipette 1x Thermometer (� 0.5oC) 1x Water bath (� 0.05oC) Water (250cm3) Figure III: Diagram of Apparatus Procedure 1. Set the water bath to 10.0oC 2. Set the hot plate to 10.0oC 3. Pour approximately 250cm3 of water into a 250cm3 beaker 4.

  1. Rate of heat loss

    warmer than isolated and single bodies. Heat being lost from individual bodies becomes trapped in between them by huddling together in groups, unlike the way in which it is easily lost to the surroundings by isolated bodies. Huddling together retains heat by trapping it within the group.

  2. Reaction Time

    and the control group will be a group of its own. The sports in SIRTD are Boxing, Judo and Badminton. The sports in SNIRTD are Stationary Bicycle and Swimming. This study aims to investigate whether people that carry out sports have or does not have a significant faster reaction time than those who do not.

  1. Biological rhythms. In order to say that such a clock exists, it is essential ...

    This frequency is considerably variable, some individual have 28-hour sleep-wake cycles whereas some others have less than 24-hours. This deviation doesn't indicate that these free-running periods are imperfect. Free-running periods are still keeping perfect time but they are not synchronized with the outside world.

  2. How does the distribution of Plantago maior differ?

    6 7 9 7 9 10 7 7.5 5, near the pathway 1 2 5.0 2 4 8.0 3 4 5.0 4 5 5.0 5 6 5.0 6 10 13.0 7 10 8.0 6, near the pathway 1 1 7.0 2 4 3.5 3 4 7 4 4 7 5

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