your mum carries them under her chins and deposits them next to your ear while she has a cheeky lick at the same time.

no

A beam of sunlight falling on a prism refracts and forms seven color bands. This illustrates that

A)

B)

C)

D)

catches more sound. your ears are already on an angle, so cupping your hand enhances that angles/amount of sound captured

True, sound waves can travel in all three mediums , solids liquids and gases

1. We hear sounds in gas medium.

2. Sonar is an application for sound in liquid.

3. Sound can make solids vibrate upon moving.

If the high frequency sound is within hearing range, you can hear it as a high-pitched sound. If it's out of the hearing range you can't hear it, of course.

Sound itself is a wave. Your brain is able to process this wave as sound as it vibrates across your eardrum. The frequency and amplitude of this wave determines how you hear it (what it sounds like), or whether or not you even hear it at all.

they dig a long hole in the ground and find it

In terms of microwaves themselves, the dangers are largely limited to the effects of the heat generated when the microwaves interact with human tissue. The greatest risk of high power microwaves is to the eyes, where the heat cannot be quickly removed by the cooling effect of the blood supply. Hence, corneas are particularly vunerable to micriwave heating. The testes in males are also vulnerable, although it is generally less likely that they will be exposed to microwaves.

In terms of microwave oven use, there are two principle dangers - The first is superheated liquids (liquids above their normal boiling point), which can flash-boil when, for example, instant coffee, sugar, or any other power is added. The second (and at one time the cause of most microwave oven accidents) comes from exploding unbroken eggs, as the yolk heats so efficiently that, even if the egg doesn't explode in the microwave, it can explode in the user's face when it is removed from the microwave oven.

There are no reliable reports of adverse health effects from low-level microwaves from such things as mobile phones or telecom masts.

By shock waves synapsing through ears and turtles in an ocean communicating through the balls of your body

I think you mean pitch.

We communicate using sound waves by talking and listening to one another!

Frequency and amplitude.

Ummmmm, NO.

Ignore that.

This describes an Echo.

Assuming a perfectly smooth surface, the reflected wave travels away from the reflector in accordance with the usual angle of incidence = angle of reflection, diminishing with the square of the distance.

Not all the energy is reflected fully. Some is scattered or absorbed by the reflecting surface.

If the sound is reflected back and forth in a chaotic overlap the result is reverberation, as in a cathedral or in the ocean.

In the sea reverberation gives whale calls that plangent "singing" quality, from what are really only squawks and grunts.

The result of a reflected sound wave is obviously an echo.

Reverberation can be reduced by varios methods:

1:Hang up heavy drapes from the ceiling to the floor.

2:Coverhard floors with thick carpet.

3:Install acoustical ceiling tiles in the room.

4:Increase the insulation above the ceiling of the room and between the walls.

The sounds reflect off of other surfaces. Usually the reflective sounds will create an illusion that they are coming from every direction. That's why city ambulances running lights/sirens often get in accidents, is drivers don't know where they are coming from and don't yield. Sirens are really loud...

The wave will move faster, increasing its speed.

Not all sound that hits matter is absorbed. Some of it is reflected. That means sound bounces off the solid matter the way a tennis ball bounces off a wall. Sound reflected back to its source is an echo.

An Echo-echo-echo-echo! The answer is Echo

The idea is that our ears have organs which are specifically designed to detect those vibrations. Note that only vibrations between about 20 and 20,000 hertz (i.e., cycles per second) can be detected by human ears.