9d : Mediums, Speed, and Distances

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

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Front

How does the speed of sound compare to the speed of light?

Back

The speed of sound is much slower than the speed of light; sound travels at about 343 meters per second (m/s) in air at room temperature.

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Front

What is a medium in the context of wave propagation?

Back

A medium is a substance or material through which waves travel, such as air, water, or solid materials.

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Front

What happens to the speed of sound when it travels from air to water?

Back

The speed of sound increases when it travels from air to water because water is denser than air.

Front

What is the relationship between the density of a medium and the speed of sound?

Back

Generally, sound travels faster in denser materials because the molecules are closer together, allowing for quicker transmission of sound waves.

Front

What is the difference between mechanical waves and electromagnetic waves?

Back

Mechanical waves require a medium to travel through, while electromagnetic waves can travel through a vacuum.

Front

What is an example of a mechanical wave?

Back

Sound waves are an example of mechanical waves.

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Front

What is an example of an electromagnetic wave?

Back

Light waves are an example of electromagnetic waves.

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Front

How does temperature affect the speed of sound in air?

Back

The speed of sound increases with an increase in temperature in air.

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Front

What is refraction in the context of wave behavior?

Back

Refraction is the bending of waves as they pass from one medium to another, changing speed and direction.

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