Jc Aqa Gcse 232 P1a1 3 Pct Testing Insulators

P1a 1.3 Practical sheet Name:

Class:

Testing sheets of materials as insulators Aim To work as part of a team to compare different insulating materials by using them to insulate beakers or cans of hot water.

Part 1 1

Use different insulating materials to insulate identical cans (or beakers) of hot water. Make sure each beaker has a lid to stop evaporation of water from the beaker. Each group in the team is to make measurements using one of the beakers.

2

Use the measuring cylinder to ensure the same volume of hot water is in each beaker.

3

Using a stopwatch and a thermometer, measure the water temperature in ‘your’ beaker at the start and then every minute for 20 minutes.

Record all your measurements in the results table. Plot your own measurements on a graph of water temperature against time.

Part 2 4

Discuss with the team how best to compare your measurements. For example: a) You could use your graphs to measure the time taken for the water temperature to fall from one temperature to another. Or: b) You could measure the temperature drop in 15 minutes, starting from the same temperature.

Record the results of your comparison in a table. Use the results from all the groups to discuss which material is the best insulator.

AQA Science © Nelson Thornes Ltd 2006

P1a 1.3

1

P1a 1.3 Practical sheet Continued …

Part 1 Results table Time from start/ minutes

Time from start continued

Temperature/°C

Temperature continued

Part 2 Comparison table Material

AQA Science © Nelson Thornes Ltd 2006

Results

Notes

P1a 1.3

2