Investigate Absorption and Radiation Required Practical

Experimental Set Up

Investigate Absorption and Radiation Required Practical, figure 1

Method

Method 1

You are provided with the following:

  1. Leslie cube kettle
  2. Infrared detector
  3. Heatproof mat

Read these instructions carefully before you start work.

  1. Place the Leslie cube on to a heat proof mat.

  2. Fill the cube with very hot water and replace the lid of the cube.

Investigate Absorption and Radiation Required Practical, figure 1

  1. Use the detector to measure the amount of infrared radiated from each surface.

Make sure that before a reading is taken the detector is the same distance from each surface.

Draw a bar chart to show the amount of infrared radiated against the type of surface.

OR

Method 2

Investigate Absorption and Radiation Required Practical, figure 2

  1. Take two cans with different materials wrapped around them for insulation
  2. Add 300ml of hot water to either a silver or black can using a measuring cylinder
  3. Record the starting temperature using a thermometer.
  4. Record the temperature every 30 seconds for each can for 5 minutes.
  5. Repeat steps 1-3 for the other can. The starting temperature needs to be the same as before.