Resonance is when vibrations cause an object to vibrate at its natural frequency.
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20
What two physical characteristics of sound waves affect how humans perceive sound?
The two characteristics are frequency and amplitude.
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What does amplitude determine in sound?
Amplitude determines the loudness or intensity of a sound â larger amplitude means a louder sound.
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10
Through which materials can sound travel?
Sound can travel through solids, liquids, and gases. It travels fastest in solids and slowest in gases.
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25
What happened to the Tacoma Narrows Bridge, and how is it related to resonance?
The Tacoma Narrows Bridge collapsed because strong winds caused it to vibrate at its natural frequency. This resonance increased the vibration amplitude until t
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How are sound waves important in music?
In music, sound waves allow musicians to create different notes and tones by changing the frequency and vibration of instruments.
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20
What does frequency determine in sound?
Frequency determines the pitch of the sound â a high frequency means a high pitch, and a low frequency means a low pitch.
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What causes sound to be produced?
Sound is produced when an object vibrates, causing nearby air particles to move and form sound waves.
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What is ultrasound used for in medicine?
Doctors use ultrasound to check babies and internal organs without surgery, as it is a safe and non-invasive method.
