Sound Flashcard 2024

Front

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Back

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Front

A ringing bell is located in a large glass jar. When the air is removed from the jar, why can the bell be seen vibrating but not heard?

Back

Light waves can travel through a vacuum, but sound waves can not.

Front

A thick pillow is placed against a stereo speaker. How does the pillow affect the sound waves coming from the speaker?

Back

The sound waves are absorbed.

Front

Which part of your ear is responsible for collecting sound waves? Options: Inner ear, Middle ear, Outer ear, Audio receptors

Back

Outer ear

Front

During a 4th of July celebration, scientists were measuring sound waves as the fireworks exploded. Which illustration indicates that the fireworks were becoming louder?

Back

Front

Why can't humans hear the sound made by Elizabeth's whistle used to call her dogs?

Back

The frequency of the sound is too high.

Front

The Doppler Effect is noticed in which of the following situations? When a car with its honking horn moves towards you and then drives away., When geese fly in formation, and the goose at the front is honking., When a drum is struck hard., When sound does not travel in a vacuum.

Back

When a car with its honking horn moves towards you and then drives away.

Front

Why should Amy tap on an empty glass rather than a glass that has water in it?

Back

The empty glass has a higher pitch.

Front

The fire alarm went off in school. Why were some students seen covering their ears as they were exiting for the fire drill?

Back

To decrease the amount of vibrations entering the ear.

Front

John woke up one morning and noticed he could not speak above a low whisper. What is the most likely cause for this?

Back

A decrease in the vibrations of his vocal cords.