Infrared Radiation RPA

Question 1

Method for seeing rate at which different textures and coloured surfaces emit infrared radiation

Answer 1

1) boil water in kettle and pour hot water into Leslie cube once boiled
2) immediately place lid on cube and use ruler to measure 40cm away from Matt black surface of the cube
3) hold infrared thermometer facing Leslie cube 40cm away from the cube and record temperature
4) repeat at least 2 more times to calculate mean temperature recorded
5) repeat for each different surfer of the Leslie cube ensuring to act quickly so the temperature if the water in the Leslie cube stays constant
The surface with the highest temperature recorded means it emits infrared radiation at the highest rate and vice versa

Question 2

Hazard and risk

Answer 2

Hot water
Could burn yourself

Question 3

Name for equipment used to detect temperature

Answer 3

Infrared thermometer

Question 4

How to use results to identify which surface emits infrared radiation at the highest rate

Answer 4

Highest mean temperature recording on infrared thermometer

Question 5

Name for cube with boiled water in

Answer 5

Leslie cube

Question 6

Why plot data as bar chart

Answer 6

It’s categoric

Question 7

Aim of investigation

Answer 7

Identify which surface emits infrared radiation at the highest rate