Works Flashcards
Electrical energy
Electrical energy: the energy made available by the flow of electric charge through a conductor
Gravitational potential energy
Gravitational potential energy: energy stored due to the height of an object above a base level
Elastic potential energy
Elastic potential energy: describes a material that is able to return to its original size after being stretched
Nuclear energy
Nuclear energy: the energy stored at the centre of atoms, the tiny particles that make up all substances. Nuclear energy can be released from the radioactive metals uranium or plutonium, and transformed into electrical energy in a nuclear power station.
Efficiency
Efficiency: the fraction of energy supplied to a device as useful energy. It is usually expressed as a percentage.
Chemical energy
Chemical energy: potential energy derived from chemical reactions
Conduction
Conduction: transfer of heat through collisions between particles
Insulator
Insulator: a material that is a poor conductor of heat
Convection
Convection: transfer of heat through the flow of particles
Radiation
Radiation: a method of heat transfer that does not require particles to transfer heat from one place to another
Radiant heat
Radiant heat: heat transferred by radiation, as from the sun to the Earth
Reflected
Reflected: bounced off
Transmitted
Transmitted: passed through something, such as light or sound passing through air
Absorbed
Absorbed: taken in
Luminous
Luminous: releasing its own light
Incandescent
Incandescent: describes objects that emit light when they are hot
Bioluminescent
Bioluminescent: describes living things that release light energy
Scattered
Scattered: describes light sent in many directions by small particles within a substance
Vibrations
Vibrations: repeated fast, back-and-forth movements
Compression
Compression: the process of pushing a material into itself
Rarefactions
Rarefactions: in sound waves, the layers of air particles that are spread apart (between compressions)
Sound waves
Sound waves: vibrations of particles in the air
Reverberations
Reverberation: longer-lasting sound caused by repeated reflection from hard surfaces
Law of conservation of energy
Law of Conservation of Energy: a law that states that energy cannot be made or lost. However, energy can be transformed from one type to another or transferred from one object to another.
