Chapter 5 - Sound Energy Flashcards

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1
Q

Longitudinal wave

A

Sound Energy - particles move back and forth in the same direction its traveling.

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2
Q

Reflection of sound

A

When it hits hard surface, its kinetic energy reflects and creates echoes.

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3
Q

Absorption of sound

A

When hits a soft surface, kinetic energy is absorbed into heat, due to friction.

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4
Q

Diffusion of sound

A

When hits a rough surface, the energy is diffused, or muffled in many directions.

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5
Q

Sound travels through matter

A

Sound travels fastest in solids, and slowest in gasses.

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6
Q

Pitch

A

Pitch is determined by how quickly particles vibrate in a sound wave.

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7
Q

Frequency

A

The number of waves that pass per second. The higher the frequency, the higher the pitch.

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8
Q

Loudness

A
  • loudness depends on the amount of kinetic energy in the particles.
  • measured in decibels
  • loudness on a graph is desplayed as amplitude.
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9
Q

conduction

A

transfer of energy between adjacent molecules

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10
Q

convection

A

movement of a hot fluid

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11
Q

radiation

A

emission of electromagnetic rays

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