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Waves Flashcards

(21 cards)

1
Q

Frequency

A

The rate of vibration is frequency of sound or How many waves go past a point in one second.

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2
Q

Period

A

The period of a wave is the time it takes for two successive crests to pass a fixed point

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3
Q

wavelength

A

The distance from crest to crest or trough to trough

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4
Q

Crest

A

The highest point of a wave

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5
Q

Trough

A

The lowest point of the wave

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6
Q

Medium

A

An intervening substance, as air, through which a force acts or an effect is produced

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7
Q

Amplitude

A

The height or strength of a wave

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8
Q

Longitudinal wave

A

A wave that occurs when the particles of a medium move parallel to the direction of the wave

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9
Q

Electromagnetic spectrum

A

The full range of frequencies of electromagnetic waves

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10
Q

Transverse wave

A

A wave that occurs when the particles of a medium are displaced perpendicularly to the direction of the wave

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11
Q

Compression

A

Occurs when rocks are squeezed by external forces directed toward one another to put stress on the rock, acting to decrees it’s volume or shorten its dimensions

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12
Q

Rare fraction

A

The decrease in density of a medium in a congressional wave or longitudinal wave. Or when the particles move farther a part

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13
Q

Reflection

A

To strike a surface and bounce back in the opposite direction

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14
Q

Refraction

A

To bend light as it goes through material

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15
Q

Diffraction

A

The slight bending of light as moving through or around an object

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16
Q

Mechanical wave

A

Unlike electromagnetic waves, mechanical waves need a medium to travel through.

17
Q

To find speed you,

A

Multiply frequency and wavelength(lambda)

18
Q

To find frequency you,

A

Divide speed by wavelength(lambda)

19
Q

Electromagnetic wave

A

Unlike mechanical waves, these waves don’t need a medium to travel through

20
Q

To find wavelength (lambda) you,

A

Divide speed by frequency

21
Q

Compressional wave

A

Waves in which the medium moves back and forth in the same direction as the wave. There parts contain compression and rare fraction. Examples are sound waves. They need a medium to travel through