REQUIRED PRACTICAL- Absorption and emission of Infrared radiation

Question 1

WHAT IS THE INDEPENDENT VARIABLE?

Answer 1

Colour of the can

Question 2

WHAT IS THE AIM OF THE PRACTICAL?

Answer 2

To come to a conclusion of how efficient materials and surfaces are at emitting and absorbing infrared radiation

Question 3

WHAT IS THE DEPENDENT VARIABLE?

Answer 3

the temperature

Question 4

WHAT IS THE CONTROL VARIABLE?

Answer 4

volume of water

Question 5

WHAT EQIPMENT WILL YOU NEED?

Answer 5

Two cans one shiny and light and one matter and dark
thermometer
kettle
measuring jug or beaker
timer

Question 6

EXPLAIN HOW T CARRY OUT PRACTICAL?

Answer 6

1) Boil the kettle the kettle and measure out equal amounts of water in a measuring beaker
2)Pour water in two different cans and Measure the initial temp of the water inside the cans with a thermometer
3) Set timer for 30 mins and the measure temperature of cans after

Question 7

WHAT CAN WE CONCLUDE FROM THIS PRACTICAL?

Answer 7

Can with the biggest change of temperature is the best emitter

Question 8

HOW CAN WE ADAPT THIS PRACTICAL FOR ABSORPTION

Answer 8

Fill cans with cold water and place in sun for 30 mins
ONE WITH BIGGEST TMPERATURE INCREASE IS BEST ABSORBER