Waves Flashcards

1
Q

Transverse Wave

A

A transverse wave is a wave vibrating at right angles to the direction of its propagation.

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2
Q

Compression Wave

A

A compression wave is a longitudinal wave (such as a sound wave) propagated by the elastic compression of the medium.

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3
Q

Crest

A

The highest point of a wave.

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4
Q

Trough

A

The lowest point of a wave.

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5
Q

Compression

A

Compression is the action of compressing or being compressed.

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6
Q

Rarefraction

A

Rarefaction is the reduction of an item’s density, the opposite of compression. Like compression, which can travel in waves (sound waves, for instance), rarefaction waves also exist in nature. A common rarefaction wave is the area of low relative pressure following a shock wave.

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7
Q

Frequency

A

The frequency of a wave is the number of waves passing a point in a certain time.

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8
Q

Amplitude

A

The amplitude of a wave is the distance from the center line (or the still position) to the top of a crest or to the bottom of a trough.

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9
Q

Wavelength

A

The distance between a point on one wave to the identical point on the next wave.

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10
Q

Medium

A

In the case of a water wave in the ocean, the medium through which the wave travels is the ocean water. In the case of a sound wave moving from the church choir to the pews, the medium through which the sound wave travels is the air in the room.

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11
Q

Electromagnetic Wave

A

Electromagnetic waves are waves that are created as a result of vibrations between an electric field and a magnetic field.

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12
Q

Mechanical

A

A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium.

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13
Q

Pitch

A

How high or low the sound seems to be.

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14
Q

Refraction

A

The bending of light because of a material.

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15
Q

Absorption

A

Absorption is the process or action by which one thing absorbs or is absorbed by another.

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16
Q

Reflection

A

Reflection is the throwing back by a body or surface of light, heat, or sound without absorbing it.

17
Q

Doppler Affect

A

The change in pitch or wave frequency due to a moving wave source