Friday, September 21, 2012

Another Experiment!

This experiment is on the rate of temperature change.

Materials
-Hot water
-1 Silver metallic cups
-1 black metallic cup
-Covers
-Plastic beaker
-2 thermometers
-Laptop!! :)

In the first experiment, we are trying to find out how the color of the container affects the rate of temperature change.

Step 1: Using the plastic beaker, collect 100cm3 of hot water and pour it into the silver metallic cup. Do the same for the black cup.

Step 2: Place the covers on the cups and stick the thermometers into the hot water through the hole in the cover (remember to use a retort stand so that the thermometer is suspended!). 


Step 3: Record the temperature at the start of the experiment, and record the temperature for every minute.

And so the wait begins.....


....Finally!!

Yay. so now, you have the results....

From the data collected, we can see that the color DOES affect the rate of temperature change. The water in the silver cup loses heat faster than the water in the black cup. Hence, we can conclude that black is a better radiator of heat. :D

You can use the laptop to tabulate/make a graph with the data collected so that it is easier to compare.

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