Loudness and Pitch Flashcards

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Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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How can a sound wave be studied?

A sound wave can be converted into an electrical signal and studied using an oscilloscope.

What does the amplitude of a sound wave indicate?

The amplitude indicates how loud the sound is. The greater the amplitude, the louder the sound.

What does the frequency of a sound wave indicate?

The frequency indicates the sound’s pitch. The higher the frequency, the higher the pitch.

Frequency is measured in hertz (Hz).

What is the human hearing range?

Humans can hear frequencies between 20 Hz and 20,000 Hz (20 kHz).

What are sounds called that are above 20,000 Hz and below 20 Hz?

Sounds above 20,000 Hz are called ultrasound, and sounds below 20 Hz are called infrasound.

Give an example of an animal that can hear in the ultrasound range.

Bats can hear in the ultrasound range, with a hearing range between 20 Hz and 120,000 Hz.

Revision Notes
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