Show the principle of 'space blanket' by comparing the rate of cooling of two beakers containing hot water, one covered in foil and the other in black paper.

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SCIENCE COURSEWORK: Space Blanket

AIM:  Show the principle of ‘space blanket’ by comparing the rate of cooling of two beakers containing hot water, one covered in foil and the other in black paper.

PLAN:  

Diagram…

Equipment…

  • 2 x 250ml beakers
  • black paper
  • foil
  • 2 x thermometers
  • kettle
  • 2 x 200ml hot water
  • stop-clock

Method…

First of all, I will wrap up each of the beakers with either black paper or foil.  Then I will pour 200ml of just off the boil hot water into each of the beakers and take a reading from each. I will start the stop clock and take a reading of the temperature after every minute.  Finally, I will take the last reading after 15 minutes, and record all my results in a table.

Fair Test…

To make my experiment fair, I will be using the same amount of hot water in each beaker.  Also, I will be using the same amount of black paper or foil on each of the beakers to make sure the same area of the beaker is insulated.  I will be conducting my experiment 3 times to get an overall average temperature.

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Prediction…

I predict that the foil blanket will keep the water hotter for longer, as light, shiny surfaces are known as good reflectors of heat, therefore it would keep the water hotter for longer.

The black beaker however, will cool down quicker because dull dark surface are the best absorbers and are good at emitting radiation therefore the water will loose heat quicker into the atmosphere.

RESULTS:

Foil covered beaker

Average

CONCLUSION:

From looking at my results and graph, you can see that although the average ...

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