Required practical 2 - Thermal Insulators

Question 1

Method

Answer 1

Place small beaker inside larger beaker
Boil water using kettle
Transfer 80cm^3 of boiling water into the beaker
Use cardboard as a lid for the beaker - must have a hole for the thermometer
Place thermometer in hole - bulb must be in water
Record starting temp and start stopwatch
Record temp every 3m for 15m
Repeat with a range of insulating materials between the 2 beakers

Question 2

What are the independent, dependent and control variables

Answer 2

Type of insulating material / Temperature / Volume of water and mass of insulating material

Question 3

Method for investigating how material thickness affects temp

Answer 3

Place small beaker inside larger beaker
Boil water using kettle
Transfer 80cm^3 of boiling water into the beaker
Use cardboard as a lid for the beaker - must have a hole for the thermometer
Place thermometer in hole - bulb must be in water
Record starting temp and start stopwatch
Record temp every 3m for 15m
Repeat experiment, adding 2 layers of newspaper each time until 6 layers