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PhysicsTest Revision

9 Science PhysicsTest Revision

TermDefinition
period how long it takes to go through its full motion once
frequency how many waves go by in a second
wavelength the distance between one crest to the next
amplitude the distance from the midline to the top of the wave
transparent Allowing nearly all light to pass through
transluscent Allowing only some light to pass through
opaque Not allowing light to pass through
waves how energy travels
electromagnetic light spectrum how different types of radiation is categorised
light waves can pass through a vacuum
sound waves cannot travel through a vaccuum
the law of reflection the angle of reflection is equal to the angle of incident
angle of incidence angle between the incident ray and the normal line
angle of reflection angle between the reflection ray and the normal line
the normal line the line at ninety degrees to a surface
the visible spectrum the frequency of light we can see
lowest frequency of light red
highest frequency of light violet
how colour is seen objects are a certain colour because it reflects that specific wavelength of light and absorbs all others
white light refelects all colours
black light absorbs all colours
convex lens thicker in the middle and thinner at the edges and focuses light rays
concave lens thinner in the middle and thicker at the edges and scatters light rays
refraction the bending of light when it travels from one medium into another
transverse waves moving in an up and down direction
longitudinal waves moving back and forth with compression and expansion
sound waves travel faster in solids
sound waves travel slower in gasses
Created by: justineforrest
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