Energy Flashcards
What is a system?
an object or a group of objects
What happens when a system changes?
energy is transferred between stores
When is energy transferred between stores?
when work is done by a force or by a current flowing
What is the conservation of energy principle?
energy can be transferred usefully, stored, or dissipated, but can never be created or destroyed
What are all the energy stores?
8
Kinetic
Gravitational potential
Chemical
Elastic potential
Magnetic
Electrostatic
Nuclear
Thermal
What has kinetic energy?
anything moving
What has thermal energy?
any object
What has chemical energy?
anything that can release energy by a chemical reaction
What has gravitational potential energy?
anything that has mass and is inside a gravitational field
What has elastic potential energy?
anything that is stretched or compressed
What has electrostatic energy?
anything with electric charge that is interacting with another electric charge
What has magnetic energy?
anything magnetic that is interacting with another magnet
What has nuclear energy?
atomic nuclei
What are all the energy transfers?
mechanically
electrically
by heating
by radiation
When is energy transferred mechanically?
when an object is moving due to a force acting on it
