Unit 1 Flashcards
conductor
A material which allows charge to move easily through it.
chemical energy
A type of stored energy. It is taken in when chemical bonds break, and given out when chemical bonds are made.
dissipated
The spreading out and transfer of energy stores into less useful forms, such as thermal energy causing the surroundings to heat up. Dissipated energy is often referred to as ‘wasted’ energy, since it is not transferred to a useful output.
dissipation
The process of energy being transferred, or lost, to the surroundings.
elastic potential energy
Energy stored in squashed, stretched or twisted materials.
electrical work
Energy transferred by an electric current.
emitted
Energy is ‘given-out’ by the material and the internal energy of the material will decrease. For example, infrared radiation from the Sun is emitted into space.
energy
The thing which is required to move or change direction
energy store
The different ways in which energy can be stored, including chemical, kinetic, gravitational potential, elastic potential and thermal stores.
energy transfer
The different ways in which energy can be transferred from one store to another includes heating, by waves, electric current or by a force moving an object.
friction
A force that opposes or prevents movement and converts kinetic energy into heat.
gravitational potential energy
The energy stored by an object lifted up against the force of gravity. Also known as GPE.
internal energy
The total kinetic energy and potential energy of the particles in an object.
kinetic energy
Energy which an object possesses by being in motion.
lubricant
A lubricant is anything which reduces the friction between two surfaces.
