How Do You Explain Echo To A Child?

What is echo in short answer?

Sound | Short/Long Answer Questions
Echo is the sound heard after reflection from a rigid surface such as a cliff, a hillside, the wall of a building etc.So from the rigid surface because the sound heard after the reflection.

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.

What is an echo sound?

echo. [ ?k?? ] A repeated sound that is caused by the reflection of sound waves from a surface. The sound is heard more than once because of the time difference between the initial production of the sound waves and their return from the reflecting surface. A wave that carries a signal and is reflected.

What is an echo what factors?

The repetition of sound caused by its reflection of a hard surface is known as echo. Factors important to get a distinct echo are: The minimum distance between the source and reflector of sound should be 17m. The size of reflector must be large enough as compared to the wavelength of the sound wave.

What is an echo Class 9 answer?

Phenomenon of hearing back our own sound is called an echo. It is due to successive reflection of sound waves from the surfaces or obstacles of large size. To hear an echo, there must be a time gap of 0.1 second in original sound and the reflected sound.

What is the sentence of echo?

Echo sentence example. The only response was the echo of an unanswered ring. He listened, but heard only the echo of his call. Nothing to echo off of, she supposed.

What is echo when is it considered useful?

In particular, an echo is considered the best way to visualize the movement and function of the heart muscle and heart valves. You may need a cardiac echo if you have heart valve disease, heart rhythm irregularities, or cardiac muscle diseases such as dilated cardiomyopathy or hypertrophic cardiomyopathy.

How do you make echo child friendly?

How to Set Parental Controls on the Amazon Echo

1. Launch your Alexa app.
2. Tap the Devices icon at the bottom of the screen and then tap All Devices.
3. Tap the name of the device for which you want to enable Kids Settings.
4. Scroll down and tap Amazon Kids and then toggle it on.

What is such kind of sound called?

There are two types of sound, Audible and Inaudible.

What is meant by sound answer?

Sound is a pressure wave which is created by a vibrating object. This vibrations set particles in the sur- rounding medium (typical air) in vibrational motion, thus transporting energy through the medium.

Why we Cannot hear the echo produced in classroom?

Echo is a sound produced when the original sound is reflected by walls of a given room.So for the case of a classroom, no echo is produced because the learners and the furniture block the sound from reaching the wall hence no bouncing back of sound.

What is an echo Class 10?

Echo – The sound heard after reflection from a distant obstacle (such as a cliff, a hillside, etc.) after the original sound has ceased, is called an echo. Reverberation – If the distance is less than 17 m, then the original sound mixes with the reflected sound.

What is echo Ncert?

Echo. When we shout near a mountain, we will hear the same sound again and again with small time interval gaps. This is called an echo. Echoes may be heard more than once due to successive or multiple reflections.

What is a echo Class 8?

The echo: Sound heard after reflection from a surface is called echo. Just like heat or light, when sound falls on a surface, it is partly reflected and partly absorbed. Soft surfaces are better absorbers of sound whereas hard surfaces are better reflectors of sound.

What does I echo your words mean?

transitive verb. If you echo someone’s words, you repeat them or express agreement with their attitude or opinion.

What does echo your thoughts mean?

An echo is an expression of an attitude, opinion, or statement which has already been expressed. I hear an echo of the thinking that got us into this mess in the first place.A detail or feature which reminds you of something else can be referred to as an echo.

What is the synonym of echo?

reverberate, re-echo, resonate, resound, reflect, ring, pulsate, vibrate, be repeated. 2’Bill echoed Rex’s words in a sarcastic sing-song’ repeat, say again, restate, reiterate, copy, imitate, parrot, parody, mimic. reproduce, iterate, recite, quote, rehearse, recapitulate, regurgitate.

Why is echo test done?

Your doctor may suggest an echocardiogram to: Check for problems with the valves or chambers of your heart. Check if heart problems are the cause of symptoms such as shortness of breath or chest pain. Detect congenital heart defects before birth (fetal echocardiogram)

What are the disadvantages of echoes?

In a theatre or a concert hall, echoes can ruin a performance if the walls and ceiling are not properly designed. Multiple echos make words of a speaker unclear to the audience. Also echos cause disturbance while communicating.

Can you put parental control on Alexa?

Parental controls on Alexa can be managed via FreeTime. This is an app feature that can be enabled on any Echo device, including the Echo Dot Kids Edition. FreeTime lets you control what your kids can access and how long they can access it. You can set what content they can hear or watch.