Investigating Insulation
Aim: To find out what type of insulation holds the most heat for a can
containing heated water.
PLAN
What factors will you be changing? The types of insulation
For what factor will you be recording readings? The temperaturelost
What equipment will you use to measure this factor? A thermometer
What factors will you keep constant to make it a fair test? Explain
how you will keep each of these factors constant.
I will be keeping the starting temperature the same. I could maintain
this by using a thermometer at the start of every experiment to keep
the temperature the same. I will also use the same volume of water.
This will be achieved by using a measuring cylinder to measure the
amount of water. I will also keep the intervals and the length of the
experiment the same. This will be achieved by using a stopwatch to
read the time.
Equipment
* Thermometer
* Bubble wrap
* Elastic band
* Cotton wool
* 4 cans
* goggles
* measuring cylinder
* stopwatch
* gloves
Prediction/ hypothesis (next page)
I think the can with the cotton wool with the lid will be the best
insulator for the can because the cotton fibers trap more air than the
bubble wrap. This is because air is a good insulator of heat, and
cotton wool traps more air than the bubble wrap, and therefore cotton
wool with the lid will be the best insulator. The lid will also trap
the heat transmitted by convection currents. The lid will trap these
convection currents, and therefore the heat will stay in. The ways
heat is lost are conduction and convection. Heat is lost through the
sides ...
... middle of paper ...
...lsius, so our new
starting temperature was 70 degrees Celsius.
Safety
I will wear safety goggles because of the boiling water. I will also
wear an overall, so I do not burn my body with the water. I will wear
gloves so I don't burn my hands with the boiling water.
Instructions for the experiment
1. Collect all of the equipment needed for the experiment
2. set up the apparatus
3. We will start on the no-insulation experiment
4. heat the water to 70 degrees Celsius
5. pour the water into the can and drop the thermometer in
6. remember the safety
7. take the readings of 1 minute intervals for 10 minutes
8. repeat the experiment 3 times
9. write down the results
10. Repeat the whole experiment for the bubble wrap, cotton wool, and
cotton wool with lid.
11. clear up safely
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