Energy Transfer and Stores

Flashcards based on lecture notes about energy transfer and stores.

Energy is never or ; it's only ever transferred.

created, destroyed

Whenever energy is transferred to an object, the energy is stored in one of that object's .

energy stores

or energy is basically the heat energy trapped within an object.

Thermal, internal

potential energy is the energy that an object possesses because of its position in a gravitational field.

Gravitational

energy is held in chemical bonds.

Chemical

Energy can be transferred mechanically, electrically, by , or by .

heating, radiation

A collection of matter is called a , which is the term to use in physics.

system

In an system, matter can exchange energy with the outside world.

open

In a system, neither matter nor energy can enter or leave.

closed

Another way of saying energy transferred is .

work done

Mechanical work done involves using a to move an object.

force

Electrical work is done when flows.

current

Friction does as it slows the train down because it causes energy in the wheels' kinetic energy stores to be transferred.

work