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

How do Colours and Radiation Affect theRate of Cooling of Tap Water?

Extracts from this document...

Introduction

How do Colours and Radiation Affect the Rate of Cooling of Tap Water? Aim: To investigate radiation and the rate at which it cools ordinary tap water according to the colour of insulation. Apparatus needed: * Several Standard 250ml glass beakers (to be replaced after each test) * A kettle (to heat the water) * A square of bubble-wrap (to sit under the beaker to insulate it from the floor) * A Thermometer * A stopwatch * Safety Goggles (due to handling very hot water) * The materials I will use to encourage radiation are: Silver Foil Black Paper White Paper Method: 1/ After setting the equipment up, as shown. Apply safety goggles and use the kettle to boil water 2/ Pour 250ml of boiled water carefully into the beaker. 3/ Once the temperature of the solution has reduced to 80?c, begin timing. 4/ At each minute record the new temperature of the water in ?c. 5/ Record each minute for 10 minutes. ...read more.

Middle

The black stripes on the zebra absorb heat and therefore create an area of low density, low pressure air. The white stripes however have the opposite affect. It is this minute change in pressure, which is thought to cause a micro-wind running across the surface of the zebra, hence cooling the animal down in the high temperatures of the African savannah. Regarding my test, my prediction is as follows: black paper will increase the rate of cooling, the heat will be drawn out of the water quicker with black paper. Silver Foil will prove to be the best insulator, as heat will be reflected back in by the metallic silver of the foil. * To test my prediction, I decided to run a few preliminary tests. These would test whether my prediction was accurate, noticeable or worth doing. I also decided on volumes of water to use, and an appropriate starting temperature. After making my initial method better I set out my final method. ...read more.

Conclusion

Both the graph and results clearly back up my prediction, the black insulation drew heat out of the water, whilst the silver foil reflected heat back in, hence the water losing less heat. My results also clearly support the theory used in my prediction. 'Black absorbs heat and silver/white reflects it.' * I feel the outcome and the experiment in its entirety was a successful one. My results provide clear conclusions without any anomalies. This I feel was due to the simplicity in which I laid out my methods, which was made easier my successful preliminary tests. My results were very accurate, but, these could be made even more accurate by the use of technology, for example, using a temperature controlled room, electronic thermometers backed up with computer timing would make the results infallible. The next step to take to prove the reliability of my findings would be to set up some fieldwork regarding radiation affects in the wild. As mentioned on Zebras in my prediction. If I were to attempt this experiment again I would draw up a different method. In this new method, instead of measuring temperature difference over a 10 minute period, I will measure timings in a 20?c range. ...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. Marked by a teacher

    Investigating the rate of cooling water in a beaker.

    This is what I did: 1. I took two beakers. 2. I wrapped bubble warp around one of the beakers, to act as an air insulator. 3. I left the other beaker as it was, but put cards on top of both beakers, to prevent evaporation of water from the beaker to get accurate results.

  2. Factors Affecting Cooling

    Temp after 210 Secs 59 66 69.5 73 75.5 Temp after 240 Secs 56 64 68 72 75 Temp after 270 Secs 54 63 67 72 75 Temp after 300 Secs 52 62 66 71 74.5 Analysis The graph clearly shows that the water in the biggest beaker cooled downed the fastest out of them all.

  1. Earth, Space and Radiation: Falling Down.

    As soon as you have got the starting position for the cup cake holder, you then turn on the clock and then drop and write down the time. 5) Take three reading at the current number of cup cake holder.

  2. What factors affect the rate of cooling of an animal?

    This happens when the animal is in direct contact with a surface, so the vibration molecules are passed from the animals' feet to the surface it is in contact with. During convection hot gases expand and become less dense, so they rise and are replaced by cooler gases, this is called the cooling effect.

  1. Investigation into the relationship between the density of fresh water shrimps in fleet brook ...

    Gammarus feed on these. Therefore if more plankton are in the stream due to the nitrate and phosphates, the number of gammarus will increase also. The problem with nitrate and phosphates is that when excessive amounts are present (often due to soil leaching, effluent produced by farms, and human effluent)

  2. I am going to investigate the rate of cooling in heated water. In my ...

    If one beaker were matt-black and the other covered aluminium foil, the matt-black beaker would absorb more heat and cool faster while the aluminium foil would reflect heat and so cool slower. To make sure my answers are as accurate as possible I will be check the thermometer every minute for 10 min.

  1. Show the principle of 'space blanket' by comparing the rate of cooling of two ...

    78 76 76 5 73 71 78 76 75 75 6 72 70 76 74 73 73 7 70 68 74 72 71 71 8 69 66 73 71 69 69 9 68 65 71 69 68 68 10 66 64 69 68 66 66 11 65 62 68 65

  2. The Cooling Rate Of A Fluid

    These two dissimilar metals create a measurable electromotive force that is determined by the metals used and the temperature of the surroundings that the junctions are in, or the difference in temperatures that the junctions are subjected to, depending on whether a one or more junction thermocouple is used.

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