Heat Radiation Flashcards
What are heat in solids transferred by?
Conduction
What are heat in gasses and liquids transferred by?
Convection
What is heat radiation the transfer of?
Heat energy by infrared radiation?
What do all objects emit/absorb?
Infrared radiation
The hotter a object dose it give of more or less infrared radiation it radiates?
More
Dose a object that is hotter than its surroundings emits more radiation than it absorbs (as it cools down) or less?
More
Dose the bigger the temperature difference effect the spread of heat transfer between an object and its surroundings?
Yes it makes it faster
What dose infrared radiation give out of?
Electromagnetic waves
What dose radiation depend on?
On surface colour and texture
What colour surface is a good absorber and good emitter of infrared radiation?
Black/Matt surfaces
What can heat energy be transferred by?
Conduction, convection or radiation
