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Year 9 Waves Energy

Year 9 Science Waves and Energy Vocabulary

Energy The ability to do work or make something happen
Chemical potential energy Energy stored in the bonds between atoms
Gravitational potential energy Energy stored in objects due to their height above the ground
Elastic potential energy Energy stored in stretched or squashed objects
Kinetic energy Energy due to an object’s motion
Electrical energy The movement of electrically charged particles
Heat energy Caused by the movement of atoms and found inside all hot objects
Sound energy Energy produced by vibrating objects
Amplitude The height of a wave, measured from the rest position
Frequency The number of waves that pass a point in one second
Wavelength The distance between two crests or troughs of a wave
Sound Vibrations that can be detected by the ears
Light energy A type of energy which has wavelengths that can be detected by the eyes
Reflection Occurs when light changes direction and ‘bounces off’ a surface
Refraction Occurs when light changes direction (‘bends’ or refracts) when it passes from one substance to another (e.g. air to water)
Concave A surface which curves inwards
Convex A surface which curves outwards
Mirror A surface which reflects a clear image
ROYGBIV The order of the colours which make up white light (red, orange, yellow, green, blue, indigo, violet)
Opaque An object which blocks light
Transparent An object which allows all light to pass through
Translucent An object which allows some light to pass through
Shadow An area that light cannot travel to because it is being blocked by an opaque object
Created by: nztcowen


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