The reason for the children. Why about the echo
When children begin to be aware of the world around them, they awaken in them the curiosity to learn, know and experience. The stage of the 'why' begins. Around 3 years of age, children want to know everything, and 'bomb' repeatedly asking about everything that comes to mind. The answer to these num
When children begin to be aware of the world around them, they awaken in them the curiosity to learn, know and experience. The stage of the 'why' begins. Around 3 years of age, children want to know everything, and 'bomb' repeatedly asking about everything that comes to mind.
The answer to these numerous questions can be in many cases difficult task for parents, since they can come to pose ingenious issues that adults would not have occurred to us and not always have an easy answer.
In Guiainfantil.com we help you to know a little more the most common questions that children usually ask about echo. With these simple answers you can explain to your children the existence of this phenomenon.
The whys of children about the echo
Children are fascinated by the acoustic phenomenon produced by the echo through which a sound returns to the place of origin with a certain delay. The echo generates many doubts in children. Some of them are these:
1. Why is there an echo?
The echo is produced when we emit a sound or a word waves are emitted, if they bounce against something hard, these waves return with a few seconds of delay. As if someone repeated what we say, but not immediately.
2. Why is there no echo in a room with furniture?
So that we can perceive the echo it is necessary that there is a distance of about 100 meters from where the sound is emitted to the material with which it bounces.
3. Why do not the ducks produce an echo?
The croak of the duck if it emits an echo but the sound waves that the 'quac' originates is hardly noticeable by the human ear.
4. Why is it easier to hear echo in mountains or open spaces?
In addition to being necessary a distance of about 100 meters from where the sound is emitted to the material against which it bounces, it is necessary that this material is hard so that the sound waves can bounce. If you throw a ball against a wall it bounces but if you throw it against a curtain it will not. With the sound waves the same thing happens.
5. Why does the echo repeat what we say several times?
If the sound hits different surfaces, with different degrees of inclination, it comes to us in different emissions and degrees of intensity, as if repeating what we say in a higher way at the beginning and shorter and almost inaudible at the end.
