FAQ: What Is Echo In Physics?

An echo is a sound that is repeated because the sound waves are reflected back. Sound waves can bounce off smooth, hard objects in the same way as a rubber ball bounces off the ground. But sounds are not always reflected.

What is echo Short answer?

Echo is the sound heard after reflection from a rigid surface such as a cliff, a hillside, the wall of a building etc.

What is echo explain?

An echo is a repetition or imitation of sound. When sound waves hit a hard surface they might reflect, making the sound bounce and repeat. If you agree with someone, you might echo his or her statement.

What is echo and its uses?

Echoes are used by bats, dolphins and fisherman to detect an object / obstruction. They are also used in SONAR (Sound navigation and ranging) and RADAR(Radio detection and ranging) to detect an obstacle.

What is echo explain with example?

Echo is defined as a sound repeating by sound wave reflection, having a lasting or far reaching impact, or repeating what someone else has said. An example of echo is the repeating of a sound created by footsteps in an empty marble hallway. An example of echo is a teacher agreeing with and repeating what a parent says.

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What is an echo in writing?

A textual echo is a sequence of details, passages, textual features, or moments that the author invites us to compare and contrast. Every literary text offers many keywords for analysis.

What is an echo answer in one word?

From Wikipedia, the free encyclopedia. In linguistics, an echo answer or echo response is a way of answering a polar question without using words for yes and no. The verb used in the question is simply echoed in the answer, negated if the answer has a negative truth-value.

What is the importance of echo?

An echo is a preliminary but yet comprehensive test for the heart. The test is a simple one and non invasive. With the help of the ultrasound machine both the cardiologist and the radiologist is able to see live images of the heart. The images are produced with the help of sound waves.

Why does echo happen?

This phenomenon is called an echo, which has its origins in the Greek ekho, meaning “sound.” An echo happens when a sound wave reflects off a surface, such as the water at the bottom of a well, and the sound is repeated back to you. The original sound should be of short duration.

Why is it called an echo?

A true echo is a single reflection of the sound source. The word echo derives from the Greek ἠχώ (ēchō), itself from ἦχος (ēchos), “sound”. Echo in the Greek folk story is a mountain nymph whose ability to speak was cursed, leaving her able only to repeat the last words spoken to her.

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What are the 3 characteristics of sound?

10.3 Characteristics of a sound wave (ESADD) The basic properties of sound are: pitch, loudness and tone.

What is an echo Class 9?

An echo is sound which is repeated. This is because sound is reflected back. Example- If we stand on top of mountain and shout our name. We hear the repetition of our sound.

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