Question

hy guys

what is the meaning of
1) ULTRASOUND
2) SONAR
3) REFLECTION OF SOUND
4) PRODUCTION OF SOUND
5) SOUND​

Answer 1

Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" sound in its physical properties, except that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz in healthy young adults

Sonar-a system for the detection of objects under water by emitting sound pulses and detecting or measuring their return after being reflected.

"a weak sonar signal"

REFLECTION OF SOUND -Reflection of Sound. ... Bouncing back of sound wave from the surface of solid or liquid is called reflection of sound. Reflection of sound follows the Laws of Reflection as light wave does. This means the angle of incident wave and reflected wave to the normal are equal.

PRODUCTION OF SOUND-Sound is produced when something vibrates. ... around it to vibrate. Vibrations in air are called traveling longitudinal waves, which we can hear. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.

SOUND-Sound is the term to describe what is heard when sound waves pass through a medium to the ear. All sounds are made by vibrations of molecules through which the sound travels. For instance, when a drum or a cymbal is struck, the object vibrates. These vibrations make air molecules move.

ram⚔️ram

Answer 2

Answer:

the correct answer is

Explanation:

1) ultrasound- Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" sound in its physical properties, except that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz in healthy young adults.

2) sonar- Sonar is a technique that uses sound propagation to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels.

3) Reflection of Sound : When sound travels in a given medium, it strikes the surface of another medium and bounces back in some other direction, this phenomenon is called the reflection of sound. The waves are called the incident and reflected sound waves.

4) production of sound- Sound is produced when something vibrates. The vibrating body causes the medium (water, air, etc.) around it to vibrate. Vibrations in air are called traveling longitudinal waves, which we can hear. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.

5) sound- In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain.

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