3.3 Wave Systems Flashcards

1
Q

Wave

A

A regular pattern of disturbance; something that vibrates

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2
Q

Medium

A

The material that is vibrated as a wave moves through it

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3
Q

Light waves

A

A wave that can travel through a vacuum (a space without matter)

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4
Q

Mechanical waves

A

A wave that requires a medium to travel through

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5
Q

Seismic wave

A

A wave produced in the earth

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6
Q

Transverse waves

A

A wave whose particles move up and down

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7
Q

Crest

A

The highest point/ point of maximum density in a wave

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8
Q

Trough

A

The lowest point/ point of minimum density in a wave

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9
Q

Longitudinal waves

A

A wave whose particles move from left to right

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10
Q

Wavelength, λ

A

The distance between two corresponding points on a wave (eg. peak-peak, trough-trough)

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11
Q

λ

A

Lambda, the symbol for wavelength

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12
Q

Velocity, v

A

The speed at which a wave moves (ms-1)

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13
Q

Frequency, f

A

The number of times a wave oscillates/ full cycles pass per second (Hertz/Hz)

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14
Q

Period, T

A

How long it takes for a full cycle/ whole wave (one crest and one trough) to pass a single point (s)

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15
Q

Amplitude, A

A

The height of a crest/ trough

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16
Q

Oscillation

A

The repeated back and forth movement between two positions

17
Q

Direction of propagation

A

The overall direction a wave is moving

18
Q

Radian

A

The arc subtending an angle. AKA the arc along a circle that intersects two sides of an angle.

19
Q

Antinode

A

A point on a standing wave with maximum amplitude

20
Q

Standing wave

A

A vibration where some parts of a wave remain fixed, while others oscillate at maximum amplitude

21
Q

Node

A

A point on a standing wave with minimum amplitude

22
Q

Beats

A

A resultant wave caused by constructive and destructive interference

23
Q

Interference

A

When two waves from two different sources superimpose and make a wave of either larger, smaller or the same amplitude

24
Q

Constructive interference

A

When two waves superimpose and the resulting wave has a higher amplitude than the previous waves

25
Q

Destructive interference

A

When two waves superimpose but cancel each other out, resulting in a wave with a lower amplitude

26
Q

Diffraction

A

The spreading out of a wave after passing through a narrow gap

27
Q

Doppler effect

A

An increase/ decrease in frequency due to a moving observer/ object

28
Q

Harmonic

A

A whole number multiple of the resonant frequency

29
Q

Resonant frequency

A

The natural vibration of a wave