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that if the vacuum cleaner is on the dog will run away because of a very loud pitch that we can't hear.

That there is 5 parts of the ear that the sound goes through so that we can hear it.

That the frequency that the United States use to find submarines long distances away can cause Whales to beach themselves to get away from the sound.

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When they are close together and tall it is a loud high pitch. When they are close together and short that is a low high pitch. When they are high and spread out that is a loud low pitch. When they are short and spread out it is a soft low pitch

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You could have a diagram showing tat when there is no wind you can hear things very far away as well when they are speaking to someone and the wind is going that way. If the wind is going the opposite way you can not hear nearly as far.

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The vibration goes through the air and pushes into the next particle and that keeps going. After a bit the vibrations just fade away into nothing.

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The fact that dogs and cats and many other things can hear much lower and higher frequencies than we can.

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Done

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Echolocation: The location of objects by reflected sound, in particular that used by animals such as dolphins and bats.

Sonar:  A system for the detection of objects under water and for measuring the water's depth by emitting sound pulses and detecting or measuring their return after being reflected.

Ultrasonic: Of or involving sound waves with a frequency above the upper limit of human hearing.

Infrasonic: Of or involving sound waves with a frequency above the upper limit of human hearing.

frequencies: The rate at which something occurs or is repeated over a particular period of time or in a given sample.

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The fact that mice have got far better hearing than dogs and us even though their ears and smaller than our ear lobes.

The fact that Elephants can hear over ten Kilometres in the right conditions.

The fact that the reason that dogs hate the vacuum cleaner because they can hear a pitch caused by it that we can't.

The fact that sounds that navy vessels make to find submarines very far away can cause whales to Beach themselves.

The older you get the worse your hearing is.

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One way is when two objects hit they make a sound and for animals and creatures they use vocal chords.
Echolocation, Sonar, Sound waves, Vocal and Noise

It goes into the ear canal and then into the Pinna and then through to the Ear Drum then Oscillates and last to the Cochlea.

The Pinna, Ear Drum, Oscillates, Cochlea, Auditory nerve, Ear canal, Ear Lobe.

No a lot of animals can move there ears differently so they use that to find sounds that are to high pitched for us to hear. They also use there ears instead of an ear canal.

How can Elephants hear over 10 kilometres in the right conditions.

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I think I will learn what echolocation is and what it is good and bad for.

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I have a feeling it is going to be to do with sound sonar. I know that many species of animals use echolocation. How bats use it is they send out signals that bounce back off bugs and they know how far away the bugs are.

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done