Heat Radiation Flashcards
What is heat energy transferred by?
Conduction, convection or radiation
What is heat in solids transferred by?
Conduction
What is heat in liquids and gases transferred by?
Convection
What is heat radiation transferred by?
Heat energy by infrared radiation
What are good absorbers and good emitters of infrared radiation?
Dark Matt surfaces
What are poor absorbers and poor emitters of infrared radiation?
Light shiny surfaces
What are good reflectors of infrared radiation?
Light shiny surfaces
What is infrared radiation?
Giving out of electromagnetic waves
What do all objects emit and absorb?
Infrared radiation
The hotter an object is…
The more infrared radiation it radiates
What doe solar hot water panels have?
Water pipes under a black surface
Why is radiation from the sun absorbed by black surfaces
To heat the water in the pipes
