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11 terms

5th Grade Science-Light,Sound & Heat

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reflection
the light energy that bounces off objects
refraction
the bending of light rays when they pass through a substance
lens
a piece of clear material that bends, or refracts, light rays passing through it
pitch
an element of sound determined by the speed which sound waves move
volume
the loudness of a sound
temperature
the average kinetic energy of all the molecules in an object
kinetic energy
the energy of motion, or energy in use
heat
the transfer of thermal energy from one substance to another
conduction
the direct transfer of heat between objects that touch
convection
the transfer of heat as a result of the mixing of a liquid or a gas
radiation
the transfer of thermal energy by electromagnetic waves