• 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

Investigating the rate of cooling water in a beaker.

Extracts from this document...

Introduction

INVESTIGATING THE RATE OF COOLING OF WATER IN A BEAKER I am going to investigate the rate of cooling water in a beaker. My aim is to find out how the rate of cooling water is effected/changes when put in a beaker. By performing this investigation I am hoping to achieve further knowledge/understanding on the concept of cooling. There are various things to take into consideration when performing this investigation, such as the effect of temperature, time and quantity/volume of water that is used. To make the task easier, I have designated all the variables into three different groups: 1. Independent variable (the things I will change each time I perform the experiment). 2. Dependent variable (the things I will measure). 3. Constants (the things I will keep the same). I have decided that when carrying out the investigation I will not have any independent variables. There will be only 1 dependent variable, which would be the temperature of the water, after every 1 minute. And as I am going to carry out the same experiment twice, I have a lot of constants, which are: 1. The temperature of water, which should be 100 degrees (boiling). 2. The volume of water, which should 150ml. 3. The size of the beaker. ...read more.

Middle

1 THERMOMETER. METHOD FOR CARRYING OUT EXPERIMENT: 1. Place all the equipment on the desk. 2. Make two result tables. 3. Put the water into the boiling thermos. 4. Boil the water and then pour it into the beaker. 5. Make sure that the volume of water is accurately measured (150ml). 6. Place the thermometer into the beaker. 7. Wait for the temperature to rise to its limit, before taking any readings or starting the stopwatch. 8. Once that is done, then only take the reading of the temperature of water and start the stopwatch immediately. 9. Take the temperature reading after every 1-minute. 10. Keep taking the readings until the stopwatch reads 30 minutes. 11. Once the 30 minutes have passed, make sure u have 30 sets of results. 12. Get rid of the water; make sure that the temperature of the thermometer is at room temperature. 13. And finally once step 12 has been performed re-peat the same procedure once again, with the same accuracy as before. Make sure you have two sets of results at the end of the experiment. METHOD FOR COLLECTING AND ORGANIZING EVIDENCE: 1. Make two table of results, exactly the same for taking down the readings: Table 1 Table 2 Time Temperature (Minutes) (Degrees) ...read more.

Conclusion

This is also the reason why my prediction about the graph forming a horizontal line at the end of the experiment, is not clearly shown. There were certainly a few errors recorded/outlined on my graphs. Two of the errors were highlighted on the temperature of water against time graph 1. And there was 1 error on the temperature of water against time graph 2. Even thou these points are likely to be errors, they are not major ones. EVALUATION I think that my plan was not efficient enough to allow me to obtain results that were totally error free. Hence I have realized that my plan contained some major sources of error. I could have had used what is effectively know as a data logger. This is an electronic device that can be used to record the temperature results automatically, with a preset time limit. Placing the device in the cooling water can do this. Hence improving the accuracy of experiment as a whole by eliminating the error margin that comes by recording the results by the naked eye. This experiment proved to be a success altogether as it agreed with my predictions as well as the scientific knowledge I obtained. However I am going to continue my research by performing another experiment but this time one which involves a solid object and investigate how its rate of cooling is affected over a specific time period. ...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


This is three star laboratory report. It gives a good overview of the background science associated with the cooling of water (however this is not appropriately referenced). The main features of the work are described with some practical detail. All the raw data and is recorded however is limited by the experiment only being repeated twice and the inconsistent use of decimal places throughout the report. The data is generally of a good quality and mathematical comparisons were used to support the conclusion (gradient). To improve this report the data needs to be more reliable adding and additional experiment and calculating averages from the three trials. Weaknesses in the data need to be identified and a detailed explanation of what further data would help to make the conclusion more secure. A specific conclusion needs to be stated and related to the

Marked by teacher Cornelia Bruce 17/03/2013

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

    To investigate the factors which affect the rate of cooling of a hot object.

    4 star(s)

    I will measure the amount of water in a measuring cylinder from the bottom of the meniscus in all of the volumes of water to make sure I have the correct amount of water. I will repeat the experiment on each volume three times to make sure there are no anomalies and my results are accurate.

  2. Marked by a teacher

    AN INVESTIGATION OF THE DIFFERENT SPECIES OF MAYFLY WITHIN THE POOL & RIFFLE

    4 star(s)

    to leak out. SUBSTRATE The nature of the substrate is dependent to some extent both on water velocity and geology. Depositing substrates are the normal in slow flowing and still water, where fine particulate matter and detritus settle out. The silts and muds deposited are often low in dissolved oxygen due to the decomposition of organic matter by micro-organisms.

  1. Marked by a teacher

    An investigation into the effect of a germination inhibitor on the germination of seeds.

    3 star(s)

    And they will be watered at these times as well. Since there will be water in the solution (except for the 100% inhibitor dose) then the water required is not that much - about 5cm3 or there about should be enough.

  2. Marked by a teacher

    Determine the effect that temperature has on the rate of diffusion of food coloring ...

    the time that it took for the food coloring to diffuse completely within the beaker was quicker, as it had been predicted in the hypothesis. But the food coloring took longer than had been anticipated to reach the bottom of the beaker, because its rate of diffusion in this case

  1. Investigate the factors, which affect photosynthesis.

    * Ethylated spirit is also very harmful upon bare skin. It can actually burn human skin, to protect the hands plastic gloves were worn. Goggles were worn to protect eyes and large lab coats were worn to protect any other bare skin.

  2. An experiment to investigate the effect of increasing the volume of sweat on heat ...

    7m30s 8mins 8m30s 9mins 9m30 10mins 2cm3 50°C 49°C 48°C 47°C 46°C 46°C 46°C 46°C 45°C 45°C 8cm3 46°C 45°C 44°C 43°C 42°C 41°C 40°C 40°C 39°C 38°C From our results, we can immediately see that the boiling tube with more 'sweat' lost heat more quickly, so we can tell

  1. I am trying to find out if sweating helps the body to cool down.

    is then the water is evaporated away with the heat in it. Evaluation The most inaccurate parts of my experiment are the temperature of the water when it is taken from the water bath because the temperature will dropped from when I used for the boiling tube wrapped in a

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

    A way to solve this would be to liquidise the potato which would give a very high accuracy due to the large surface area. Another thing I learnt was that when making the cylinders, all the initial masses were different.

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