Energy, Power, Infrared Flashcards
What is power?
The rate of energy transfer.
What is the equation for power?
power=(work done/time)
What are three fossil fuels?
coal, oil, gas
What is a term used in physics for energy transfer?
work
What is a definition of dissipation?
When energy is not transferred to a useful store, but to the surroundings.
What are 3 sources of a chemical energy store?
food, fuel and batteries
What is a definition of efficiency?
A measure of how well an object outputs useful energy, compared to how much energy is taken in.
All objects emit ________ _______.
thermal radiation
The ________ the object, the more infrared radiation is emitted.
hotter
_______________ are poor absorbers and poor emitters of infrared radiation.
Light, shiny surfaces
_____________ are good reflectors of infrared radiation.
Light, shiny surfaces
___________ are good absorbers and emitters of infrared radiation.
Dark, matt surfaces
