Energy Stores Flashcards
What does ‘work done’ mean?
Energy transferred
What is a group of objects/matter called?
A system
What are the four methods of transferring energy?
Mechanically, electrically, by heating or by radiation
What is the difference between a closed system and an open system?
An open system can transfer energy with the outside world, while a closed system cannot
What are the two main types of work done?
Mechanical and electrical
How is energy transferred to the nuclear store?
By breaking atoms apart
What is an object’s gravitational energy determined by?
Its position in a gravitational field
How is energy transferred in a closed system?
Energy can be transferred within the system, but the overall change is always zero
How is energy converted by a stereo?
Electrical to sound energy
How is energy converted by an oven?
Electrical to thermal energy in the form of radiation waves and convection currents
