P1.1 (Heating and cooling) - needs to be altered Flashcards
1
Q
What is infra-red radiation?
A
Infra-red radiation is the transfer of thermal energy, and is emitted from hot objects
2
Q
What is electromagnetic radiation?
A
Radiation that uses waves rather than particles and so can travel where there are no particles e.g a Vacuum e.g Infra-red radiation
3
Q
Which material is the best at emitting and absorbing infra-red radiation?
A
Dark, matt surfaces
4
Q
Which material is the worst at emitting and absorbing infra-red radiation?
A
Light, shiny surfaces
