Physics Sound Quiz

<p>0.1 s (D)</p> Signup and view all the answers

<p>344 m/s (D)</p> Signup and view all the answers

<p>692 m (D)</p> Signup and view all the answers

<p>To reduce reverberation (A)</p> Signup and view all the answers

<p>To improve the acoustics of the auditorium by reducing reverberation (D)</p> Signup and view all the answers

<p>To reflect sound waves to distribute sound evenly throughout the hall. (A)</p> Signup and view all the answers

<p>To focus sound waves in a specific direction. (C)</p> Signup and view all the answers

<p>20 Hz to 20000 Hz (B)</p> Signup and view all the answers

<p>To improve the acoustics of the space by reflecting sound waves towards the audience. (A)</p> Signup and view all the answers

<p>Increase the strength of electrical signals (A)</p> Signup and view all the answers

<p>Ultrasound waves can be focused into a narrow beam. (B)</p> Signup and view all the answers

<p>Infrasonic waves (D)</p> Signup and view all the answers

<p>Its ability to travel in straight lines despite obstacles. (C)</p> Signup and view all the answers

<p>Reflection of ultrasound waves by different tissues (D)</p> Signup and view all the answers

<p>Ultrasonic waves are used to measure the distance to objects underwater. (D)</p> Signup and view all the answers

<p>Through multiple reflections of sound waves. (D)</p> Signup and view all the answers

<p>Brain (A)</p> Signup and view all the answers

<p>It is commonly audible to humans. (B)</p> Signup and view all the answers

<p>To convert ultrasonic waves into electrical signals (A)</p> Signup and view all the answers

<p>20 Hz to 20,000 Hz (B)</p> Signup and view all the answers

<p>Provides detailed images of internal organs (A)</p> Signup and view all the answers

<p>To measure the depth of the ocean and locate underwater objects. (D)</p> Signup and view all the answers

<p>Ultrasound (D)</p> Signup and view all the answers

<p>Ultrasonic waves (C)</p> Signup and view all the answers

<p>Distance = Speed × Time (A)</p> Signup and view all the answers

<p>Because the sound wave travels twice the distance of the depth of the water, once down and once back up. (C)</p> Signup and view all the answers

<p>Sound Navigation And Ranging (A)</p> Signup and view all the answers

<p>Breaking up kidney stones (B)</p> Signup and view all the answers

<p>By measuring the time the ultrasound waves take to travel to the object and back (B)</p> Signup and view all the answers

<p>The sound waves create vibrations in the balloon, which in turn cause the mirror to vibrate. (C)</p> Signup and view all the answers

<p>Air (B)</p> Signup and view all the answers

<p>Sound waves travel through a medium, while light waves can travel through both a medium and a vacuum. (D)</p> Signup and view all the answers

<p>Sound waves require a mechanical medium to travel. (D)</p> Signup and view all the answers

<p>The motion of particles in the medium. (A)</p> Signup and view all the answers

<p>The bee's wings vibrate rapidly, creating sound waves that travel through the air. (B)</p> Signup and view all the answers

<p>When you pluck a stretched rubber band, it vibrates back and forth, creating a sound wave. (D)</p> Signup and view all the answers

<p>The sound would be louder, but the pitch would remain the same. (D)</p> Signup and view all the answers

<p>340 m (B)</p> Signup and view all the answers

<p>22000 Hz (A)</p> Signup and view all the answers

<p>17 m (B)</p> Signup and view all the answers

<p>A person clapping their hands loudly at a distance of 2 meters (A)</p> Signup and view all the answers

<p>3000 m (C)</p> Signup and view all the answers

Sound is produced by a vibrating object creating disturbances in a medium.

A wave is a disturbance that moves through a medium without the medium's particles traveling forward.

Sound waves are mechanical and require a material medium like air or water to travel.

Sound needs a medium to travel and cannot propagate in a vacuum.

Using a tin can, balloon, and mirror, you can visualize sound's effect by observing a light spot dancing.

Light reflects off surfaces, like a mirror, allowing you to see the effect of sound on light.

Sound creates a disturbance in the medium that causes neighboring particles to move.

Sound waves are characterized by the motion of particles in the medium, not the movement of the medium itself.

Sound travels fastest in iron, then water, then air at a given temperature.

Reverberation is the persistence of sound in an environment.

Materials used to reduce sound reflection in spaces, e.g., fiberboard.

An echo is a reflected sound heard after a delay.

To hear a distinct echo, the delay must be at least 0.1 seconds.

Speed of sound varies: about 344 m/s in air at 22 ºC.

Distance = speed × time; sound travels to cliff and back.

If sound speed is 346 m/s and time is 2s, distance = 692 m.

The range of frequencies that can be heard by the average human ear, typically from 20 Hz to 20 kHz.

Sound waves with frequencies below 20 Hz, which are inaudible to humans.

Sound waves with frequencies above 20 kHz, which are also inaudible to humans.

A technique using ultrasound to create images of the heart by reflecting sound waves from its parts.

An instrument that uses ultrasonic waves to generate images of internal organs.

Device that produces and sends ultrasonic waves for imaging.

Device that receives reflected ultrasonic waves and converts them to electrical signals.

Variation in tissue composition that causes ultrasonic waves to reflect back, helping in imaging.

An instrument that amplifies sound using a tube and conical opening to direct sound waves toward an audience.

A medical device used to listen to internal sounds of the body, such as the heartbeat.

Ceilings in concert halls designed to reflect sound evenly throughout the space.

The range of sound frequencies that humans can hear, approximately 20 Hz to 20,000 Hz.

Sound with frequencies below 20 Hz, which humans cannot hear but some animals can.

The bouncing of sound waves off surfaces, helping to direct sound in instruments like stethoscopes and megaphones.

A flat surface that reflects sound waves to distribute sound evenly in a space, often used in theaters.

The frequency is the number of vibrations per second, measured in Hertz (Hz).

An echo is a reflected sound, and temperature can affect how clearly it is heard due to sound speed changes.

Sonar uses sound waves to detect objects underwater and calculates distance based on echoes.

Ultrasound is used for medical imaging and cleaning delicate items by high-frequency sound.

Loudness of sound depends on amplitude, distance, and frequency.

A technique using sound waves to create images of organs and detect abnormalities.

Method using ultrasound to measure distances by timing sound wave reflections.

A system that uses sound to navigate and locate objects underwater.

Speed at which sound waves travel in water, used for calculating distances.

Distance TRAVELLED by ultrasound is calculated using the formula 2d = v × t.

Ultrasound is utilized to detect issues such as kidney stones.

Duration between transmission and reception of an ultrasound signal.

Using SONAR to find the depth and geography of underwater landscapes.