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2020 S304 - My choices of class committee roles (Responses).xlsx

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detects crack in pipes and concrete + babies

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in a thicc medium it travels at faster speeds as compared to a less thicc medium

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Using the time it takes for sound to travel to a wall divided by the distance between the person and the wall.

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An ultrasound scan uses high-frequency sound waves to make an image of a person's internal body structures. Doctors commonly use ultrasound to study a developing fetus (unborn baby), a person's abdominal and pelvic organs, muscles and tendons, or their heart and blood vessels.

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Ultrasound are sound waves with frequencies that are too high for humans to hear.

It can be used in ultrasound imaging to diagnose a wide variety of conditions

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Sound frequencies that are above the human hearing limit (20kHz)

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Sound is a produced by vibrating sources placed in a medium.  (its vibing)

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High frequency sounds

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when you vibrate the air it vibes and you get sound

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when you vibrate the air it vibes and you get sound

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The repetition of sound due to the reflection of sound

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Loudness is determined by the amplitude of the sound wave while the pitch is determined by the frequency of the sound.

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Sound is a longitudinal wave.

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Ultrasound is the sound with frequencies that are greater than 20 000 hertz.
Applications include
Pre-natal scan to check the development of babies in the womb
Used by ships to determine the depth of the seabed
Check for cracks in metal pipers that are too small for the naked eye to see

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What determine the loudness and pitch of a sound?

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What determine the loudness and pitch of a sound?

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Amplitude and wavelength

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Suggest a method to measure the speed of sound in air?

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Suggest a method to measure the speed of sound in air?

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v=d/increase in t
Speed of sound in air is about 330m/s

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How is sound transmitted? How does the speed differ in different medium?

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How is sound transmitted? How does the speed differ in different medium?

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Through mediums. In denser mediums, sound travels faster, for example solid mediums, while in a less dense medium sound travels slower.
Speeds of sound in solids> speed of sound in liquids> speed of sound in air
In solids the atoms are more closely packed together as compared to liquids and gases.Hence sound travels the fastest in solids

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How is sound produced? What types of wave is sound?

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How is sound produced? What types of wave is sound?

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Akash: Sound is produced by vibrating energy sources that emit longitudinal waves which are waves in the form of a series of compressions and rarefactions in a medium.

Onn Kit: Sound is produced via the vibration of particles. Sound is a longitudinal wave, which transmits energy without the bulk movement of the media. BRUH