Energy Resources and Energy Transfer Flashcards
What is Power?
The rate at which energy is transferred
Power equation?
Power = Work Done / Time Taken / P = W/T
What is power measured in
Watts (1W = 1J/s)
What is work done measured in
Joules
What can energy be transferred by heat through
Radiation, conductions or convection
What is thermal radiation
Transfer of energy by heating by infrared electromagnetic waves
What is conduction and convection
Energy transfers that involve the transfer of energy by particles
What is conduction
Main form of energy transfer by heating in solids
What is convection
Main form of energy transfer bu heating in liquds and gases
What can thermal radiation also be called
Infrared radiation
An object thats hotter than its surroundings emits…
more radiation than it absorbs as it cools down
An object thats cooler than its surroundings absorbs….
more radiation than it emits as it warms up
What is thermal conduction
Where particles that are vibrating transfer energy from kinetic energy store to the kinetic energy store of other particles
When does convection occur
When energetic particles move from the hotter region to the cooler region while transferring energy
Materials with what transfer energy between particles quickly
High thermal conductivity
