Define frequency and wavelength with reference to sound.

Explain what is echo.

Write full form of SONAR.

Give anyone application of ultrasound application.

Frequency and Wavelength in Sound

Frequency refers to the number of sound wave cycles that occur in one second, measured in hertz (Hz). A higher frequency means a higher pitch, while a lower frequency results in a lower pitch. Wavelength, on the other hand, is the distance between two consecutive points of a wave, such as from crest to crest or trough to trough. In sound, a longer wavelength corresponds to a lower frequency and pitch.

Understanding Echo

An echo is a reflection of sound that arrives at the listener after bouncing off a surface, such as a wall or a mountain. When you shout in a canyon, for instance, the sound waves travel, hit the canyon walls, and return to your ears, creating the phenomenon of an echo.

SONAR Explained

SONAR stands for Sound Navigation and Ranging. It is a technology that uses sound propagation to navigate, communicate, or detect objects underwater. SONAR is commonly used in submarines and ships to locate other vessels or underwater obstacles.

Ultrasound Applications

One significant application of ultrasound is in medical imaging, particularly in prenatal scans. Ultrasound technology allows doctors to visualize the developing fetus in the womb, providing essential information about its health and development.