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Physics 101 > Waves > Flashcards

Waves Flashcards

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1
Q

What are waves?

A

Periodic disturbances in a medium

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2
Q

T/F: A wave transfers energy and material

A

False. A wave transfers energy without transferring the material.

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3
Q

Any material a wave can move through

A

Medium

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4
Q

What are common mediums?

A

Water
Air
Stadiums

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5
Q

T/G: Waves move the medium through which they travel.

A

False. Waves disturb the medium, they do not move it.

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6
Q

What is the most common form of a wave?

A

Transverse

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7
Q

Type of wave where the motion of the medium is perpendicular to the direction of the wave

A

Transverse Wave

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8
Q

Type of wave where the motion of the medium is along the direction of the wave speed

A

Longitudinal

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9
Q

What type of wave is sound?

A

Longitudinal

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10
Q

People pushing one another forward in a line is an example of what type of wave?

A

Longitudinal

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11
Q

Spots along the nodal line are called what?

A

Nodes

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12
Q

The points above and below the equilibrium

A

Above: Crests
Below: Troughs

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13
Q

Measurement of the energy in a wave

A

Amplitude

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14
Q

The length of a wave

A

Wavelength

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15
Q

The number of waves passing a point in one second

A

Frequency

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16
Q

Frequency is measured in what units?

A

Hertz (Hz)

17
Q

Frequency is the inverse of ________________.

A

Period

18
Q

The time for one wave cycle to complete

A

Period

19
Q

Symbol for Wavelength

A

Lambda

20
Q

Audible human range for frequency

A

20-20,000 Hz

21
Q

Equation for wave speed

A

v=f lambda

22
Q

Speed of Sound

A

340 m/sec in air (at 20 degrees celcius)

1520 m/sec in steel

23
Q

T/F: The speed of a wave has nothing to do with its frequency or wavelength.

A

True. The speed of a wave is determined only by the medium through which it is traveling.

24
Q

How can one change the speed of a wave?

A

Change the medium

Physics 101 (11 decks)

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