Q:

Where can a person hear sound echoes?

A:

Quick Answer

An echo can be heard in a cave when a sound reflects off surrounding walls and then is heard again. It is also possible to hear an echo in an empty room, in a mountain valley, under a bridge or by calling down into a well.

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Full Answer

The farther away the reflecting source, the longer it takes the sound to echo back. The word "echo" originates from the Greek "echo," meaning "repeated sound." In Greek mythology, Echo was a nymph who left behind only her voice when she died after her love for Narcissus, a beautiful boy who loved no one but himself, went unrequited.

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Related Questions

  • Q:

    How does an echo occur?

    A:

    An echo occurs when a sound wave reflects back towards its source after hitting a hard surface. Although the surface may absorb some of the sound, the remaining sound that is not absorbed continues moving, creating additional echoes by bouncing off surrounding objects until the sound is completely absorbed or dissipates.

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  • Q:

    How is an echo produced?

    A:

    Echoes are created by sound waves being reflected off of a large obstacle. Conditions have to be just right for the echo to be heard as a separate sound.

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  • Q:

    Why is sound important?

    A:

    Although there are many reasons sound is important; a couple reasons are that it allows humans and animals to hear and communicate, and it is a primary component in the functioning of sonar equipment. Sound occurs in a variety of waves, which have different characteristics and produce different types of noises.

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  • Q:

    How fast is sound?

    A:

    The speed of sound is dependent on the medium through which it is traveling. Under typical conditions, at sea level, sound travels 1,225 kilometers per hour, or 340.29 meters per second.

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