Required practical: thermal insulators

Question 1

Step 1

Answer 1

Place small beaker in large
Boil some water

Question 2

Step 2

Answer 2

Transfer 80cm3 of hot water into small beaker

Question 3

Step 3

Answer 3

Cover large beaker with cardboard with a hole for thermometer

Question 4

Step 4

Answer 4

Place thermometer
Ensure bulb is in the water

Question 5

Step 5

Answer 5

Record starting temperature of water

Question 6

Step 6

Answer 6

Use stopwatch to record temperature of water every 3 minutes
Do this for the next 15 mins

Question 7

Step 7

Answer 7

Repeat using same volume of hot water but place insulating material in the large beaker gap

Question 8

Step 8

Answer 8

Repeat the experiment and change the insulating material to be bubble wrap, cotton wool, polystyrene

Question 9

Independent variable

Answer 9

Type of insulating material

Question 10

Control variable

Answer 10

Mass of insulating material
Volume of water
Same starting temperature

Question 11

Dependent variable

Answer 11

Change in temperature

Question 12

How to measure effect of thickness of material on temp?

Answer 12

Repeat experiment using 2 layers of newspaper