Infrared RADIATION

Question 1

Name a good emitter and absorber of Infra Red Radiation?

Answer 1

Black (dark, matte) surfaces are both good absorbers and good emitters of infra red radiation

Question 2

Infra Red definition?

Answer 2

All objects emit (give out) and absorb (take in) infra red radiation. The hotter an object is the more infra red radiation it gives out.

Question 3

Name a good reflector of Infra Red Radiation?

Answer 3

Light, shiny surfaces are good reflectors of infra red radiation.

Question 4

What is the relationship with surface area and Infra Red emission?

Answer 4

The larger a surface area an object has the more infra red radiation it will emit.

Question 5

What is the relationship with temperature and Infra Red emission?

Answer 5

The bigger the temperature difference between an object and its surrounding the faster the rate at which heat is transferred.