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Waves

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julia7c
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Last updated: March 10, 2025
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First submittedMarch 10, 2025
Times taken10
Average score31.3%
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Hint
Answer
a disturbance that transfers energy from one place to another, without transferring matter
wave
he number of times a wave oscillates in one second
frequency
what is the wavelength of a wave
length of one oscillation
maximum displacement from the equilibrium position
amplitude
A wave where the oscillations are perpendicular to the direction of energy transfer
transverse wave
give an example of a transverse wave
electromagnetic/seismic-s/water
A wave where the oscillations are parallel to the direction of energy transfer
longitudinal wave
give an example of a longitudinal wave
sound/seismic-p
wave that results in the net transfer of energy from one point to another
progressive wave
when does constructive superposition occur
when the peaks and troughs are aligned
when does destructive superposition occur
when waves are out of phase
Two waves are coherent if they have
same wavelength
same frequency
fixed phase difference
what is produced from the superposition of two progressive waves travelling towards each other
a stationary wave
How does a stationary wave differ from a progressive wave in terms of energy transfer
no net energy transfer in a stationary wave
What is a node on a stationary wave
a point of zero displacement
What is an antinode on a stationary wave
a point of maximum displacement
What is the phase difference of all points between two adjacent nodes on a stationary wave
0
the lowest frequency for a standing wave to be observed
first harmonic
What happens to the intensity of a wave as it travels
it decreases
why^
it spreads out
it may be absorbed or scattered
the phenomenon where light changes direction as it passes the boundary between different substances
refraction
Which way does light bend when it travels from a more optically dense medium to a less optically dense medium
away from the normal
Which way does light bend when it travels from a less optically dense medium to a more optically dense medium
towards the normal
which lens focusses light on the focal point
converging
which lens causes light rays to disperse or 'diverge,' making them appear as if they originated from a focal point in front of the lens
diverging
What is the difference between unpolarised and polarised light
unpolarised has many planes of oscillation
how can light be polarised
Unpolarised light is passed through a polarising filter
why can't sound be polarised
it is a longitudinal wave
What happens when unpolarised light is passed through two polarising filters at 90° to each other
no light can pass through
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