P1

Cards (12)

Kinetic energy
Energy in moving objects
Thermal energy
Energy from heat - all objects have this
Chemical energy
Energy released in a chemical reaction
Elastic potential energy
Energy as a result of stretching
Gravitational potential energy
Energy found in raised objects
Electrostatic energy
Charges that attract or repel
Magnetic energy
Magnets that attract or repel
Nuclear energy
When the nucleus of an atom releases energy
How can energy be transferred?
Mechanically - when work is done
Electrically - when moving charge does the work
Heating - when energy is transferred from hot to cold objects
What is the law of conservation of energy?
Energy cannot be created or destroyed, only transferred
Define power
The rate of energy transfer or the amount of work done in a given time
Define efficiency
The amount of useful energy that is transferred