Heat Transfer Flashcards
What is Infrared Radiation the heat energy from?
Electromagnetic Waves
Where does the emission of Infrared Radiation occur?
In Solids, Liquids and Gases
What Objects can absorb or emit Infrared Radiation?
Any Objects
What is Infrared Radiation next to in the Electromagnetic Spectrum?
Visible Light
An object that’s hotter than its surroundings…
…emits more radiation than it absorbs (as it cools down)
An object that’s cooler than its surroundings…
…absorbs more radiation than it emits(as it warms up)
What happens when you put your hand near a hot object?
You can feel the heat radiating against your hand
What is Conduction the main form of heat transfer of?
Solids
What is Convection the main form of heat transfer of?
Liquids and Gases
What does both Conduction and Convection involve?
The transfer of energy by particles
The Bigger the Surface Area…
… the more waves that can be emitted from the surface, so the quicker the transfer of heat
The Bigger the Surface Area exposed to heat radiation…
… the quicker it will heat up
Radiation is the only one that works through a…
… Vacuum
Where does Hot Objects tend to flow from?
From a hot object to its cooler surroundings
