Science - Soundwaves (LECT)

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Sound

A form of energy which consists of waves or air particles.

Solid

The fastest way sound can travel through (medium).

Frequency, Wavelength, Amplitude, Intensity, Power, Quality, Speed

Characteristics of sound.

Frequency

The number of vibrations of sound per unit of time; expressed in Hertz which means vibrations per second (v/s). It also determines the pitch of the sound. All organisms can hear a different type of this characteristic.

Wavelength

The literal length of a wave from point to point. the distance of one crest of a wave to another, or from one trough to another.

Yes

Can a wavelength be inversely proportional to frequency? (High Freq = Low Wavelength)

Amplitude

The amount of energy of a sound wave, it is numerically equal to the distance between the crest and the equilibrium or between the trough and the equilibrium.

Intensity

The loudness or softness of the tone, the magnitude of sound energy as it travels through the unit area. the ears perceive this as volume, measured in decibel (dB).

Alexander Graham Bell

Who the unit dB is named after.

Power

The measure of sound energy per unit of time. the measure of sound is strictly from the source of the sound. expressed in Watts (w).

Quality

The fullness and richness of the sound.

Speed

How fast or slow the sound wave is traveling.

344m/s

The measurement of the speed of sound in air (under normal conditions).

Reflection

It is usually described as the turning back of a wave as it hits the barrier (it bounces back as it hits a smooth surface).

Refraction

The speed of sound is directly affected by the temperature of the medium.

Reverberation

It refers to the multiple reflections or echoes in a certain place.

Echo

An example of reflection of sound waves.