thermal insulator - required practical

What is the objective

investigate the effectiveness of different thermal insulators

Step 1

place a smaller beaker inside a larger beaker

step 2

boil water in a kettle

step 3

pour 80cm^3 of water into the smaller beaker

Step 4

Place cardboard as a lid over both beakers

What must the cardboard lid have and where

hole above the smaller beaker

Step 5

place thermometer into the hole with the bulb in the water

Step 6

record starting temperature and start the stopwatch

Step 7

record the temperature of the water every 3 minutes for 15 minutes

Step 8

Repeat the experiment with an insulating material in the gap between the beakers

What are some examples of insulating materials

cotton balls, bubble wrap

Control variables

Dependent variable

temperature

Independent variable

insulating material

How can data be plotted

cooling curve

What is on the x axis

time

What is on the y axis

temperature

will the most effective material take the most or least amount of time

most amount of time