Intro to Electromagnetic & Mechanical Waves

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Question 1: Are ultraviolet waves related to radio waves?

• No

• Yes

Answer explanation

Yes. Both are electromagnetic waves.

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Are waves on the ocean mechanical waves?

• No

• Yes

Answer explanation

Yes. They require a physical medium (liquid water), so they're mechanical waves.

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Are some physical mediums in the gas state?

• No

• Yes

Answer explanation

Yes. Air is some matter in a gas state and is the physical medium that lets birds vocally communicate with each other using sound waves.

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In transverse waves, are the directions of oscillation and propagation parallel?

• No

• Yes

Answer explanation

No. They're perpendicular to each other.

Do sound waves travel as longitudinal waves?

• No

• Yes

Answer explanation

Yes. Sound waves are the classic example of longitudinal waves in our everyday lives.

Can transverse and longitudinal waves exist in the same physical medium?

• No

• Yes

Answer explanation

Yes. They can exist in the same medium at the same time. An example are ocean waves (an example of surface waves).

Do electromagnetic waves travel as longitudinal waves?

• No

• Yes

Answer explanation

No. Electromagnetic waves travel as transverse waves.

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Are waves a propagating disturbance?

• No

• Yes

Answer explanation

Yes. The definition of a wave is a propagating disturbance.

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