Ch10-Transfering And Transforming Energy Flashcards
Absorbed
Taken in
Bioluminescent
describes living things that release light energy
Conduction
transfer of heat through collisions between particles
Convection
transfer of heat through the flow of particles
Compression
the process of pushing a material into itself
Conductor
A material that easily allows heat to flow through
Chemical energy
potential energy derived from chemical reactions
Elastic energy
the potential energy stored in a stretched elastic material
Electrical energy
the energy made available by the flow of electric charge through a conductor
Efficiency
the fraction of energy supplied to a device as useful energy. It is usually expressed as a percentage
Frequency/Pitch
number of vibrations in one second, or the number of wavelengths passing in one second
Gravitational energy
energy stored due to the height of an object above a base level
Heat energy
Energy derived from heat of hot substances
Insulator
a material that is a poor conductor of heat
Incandescent
describes objects that emit light when they are hot
Kinetic energy
energy due to the motion of an object
Luminous
Realising it’s own light
Non-luminous
describes objects that do not emit their own light, but can be seen by reflected light
Potential energy
energy that has the potential to do work and so the energy is ‘stored’, such as gravitational energy, elastic energy and chemical energy
Rarefaction
in sound waves, the layers of air particles that are spread apart (between compressions)
Radiation
a method of heat transfer that does not require particles to transfer heat from one place to another
Reflected
Bounced off
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.
Sound energy
Sound is the movement of energy through substances in longitudinal (compression/rarefaction) waves
Thermal energy transfer
Energy transfer that involves radiation, conduction and convection
Transmitted
passed through something, such as light or sound passing through air
Vibrations
repeated fast, back-and-forth movements
