Sound Flashcards

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1
Q

What is a Sound Wave?

A

A longitudinal wave caused by vibration that requires a medium to travel.

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2
Q

What does the Speed of a Sound Wave depend on?

A

A medium. The closer together something’s particles are, the faster the sound will travel.

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3
Q

What is Loudness determined by?

A

Loudness is determined by intensity.

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4
Q

What is Sound measured in?

A

Decibels.

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5
Q

What is the Range of human hearing?

A

20hz->20kHz and 0+ decibels. After about 120db, you start feeling pain.

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6
Q

What is Pitch and what is it determined by?

A

The pitch of a sound is determined by its frequency.

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7
Q

What is Infrasound?

A

Slow vibrations of frequencies lower than 20 Hz.

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8
Q

What is Ultrasound?

A

Any sound wave with frequencies higher than 20 kHz.

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9
Q

What is Fundamental Frequency?

A

The frequency of something’s vibrations.

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10
Q

What is a Harmonic?

A

Whole-number multiples of a frequency.

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11
Q

What is Resonance?

A

A phenomenon where two objects naturally vibrate at the same frequency.

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12
Q

What are the three main regions of the ear?

A

The inner, the middle, and the outer.

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13
Q

What are the three small bones of the middle ear?

A

The hammer, anvil, and the stirrup.

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14
Q

What is the Basilar Membrane?

A

A long flexible membrane that has different natural frequencies in different parts of it.

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15
Q

What is Sonar?

A

The use of sound to measure how deeps underwater something is.

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