APEX APES 7.1.1 Types of Energy
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27 Terms
chemical energy
Energy stored in the chemical bonds of a molecule
elastic energy
Potential energy stored in a distorted system
electrical energy
Energy generated by electrons moving through a conductor.
electron
A negatively charged subatomic particle located outside the nucleus of an atom.
energy
The ability to do work
force
An interaction that causes an object to undergo a change in motion.
gravitational potential energy
Energy stored in an object that is determined by the object's mass, its height (altitude), and the acceleration due to gravity at the object's location
gravity
The force by which objects attract other objects in proportion to their mass.
heat
The flow of thermal energy from one object or location to another.
heat energy
Thermal energy that flows from one object or location to another.
joule
The SI unit for energy, named after physicist James Prescott Joule.
kinetic energy
Energy associated with motion
law of conservation of energy
A law stating that energy cannot be created or destroyed; it can only change forms
light energy
Energy associated with electromagnetic waves.
light wave
An electromagnetic wave through which light energy is transferred.
mechanical energy
The sum of a system's potential energy (due to its position) and kinetic energy (due to its motion).
nuclear energy
Energy released when the nucleus of an atom undergoes change, especially in nuclear fission or fusion.
nucleus
The center of an atom, containing protons and neutrons
potential energy
Energy stored in a system due to the system's position or composition
power
The rate at which work is done.
sound energy
Energy that moves through a substance, resulting from vibrations of molecules.
sound wave
A type of mechanical wave that travels via the vibration of particles in a substance, such as air.
thermal energy
Energy due to motion of the particles that make up a system
vibration
A shaking or oscillation of matter within a medium
work
The product of a force moving an object over a distance
work formula
W= F x d (W= work, F=force, d=distance)
power formula
P= W/t (W=work, t=time)