Sound is transmitted through gases, plasma or blood, and liquids as longitudinal waves, also called compression waves. It requires a medium to propagate. Through solids, however, it can be transmitted as both longitudinal waves and transverse waves.
For example, when you flick the rim of a glass, the glass will vibrate imperceptibly. These vibrations move through the air and strike the ear drum of anyone within hearing range (click here to find out 'How Our Ears Hear'). In fact, these vibrations, or sound waves, can move through any medium: gas, liquid or solid.
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During both the Vernal Equinox and Autumnal equinox, there is an equal amount of night and day
Vernal Equinox marks the beginning of Spring and Autumnal Equinox marks the beginning of Fall
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The apparent daily rising and setting of EVERY natural object
in the sky, as seen from virtually anywhere on Earth ... the sun,
every other star, the moon, every planet, comet, asteroid, galaxy,
etc. ... is the result of the daily rotation of the Earth itself.
Roughly every 24 hours, your eyes get turned in a complete circle.
To keep watching any one thing in the sky, the direction you have
to look keeps turning. In order to stare at the moon, you need to turn
your eyes, and eventually turn your head. You don't feel the Earth
turning, so your brain decides that the Moon must be moving across
the sky.
The Earth's revolution in its orbit has nothing to do with the apparent
daily rising and setting of anything.
The statement about "<span>A wedge is simply a form of an inclined plane" is false. </span><span>The pivot joint
is the lever and the wedge are the blades of the scissors. This is to
efficiently exert force on an object to cut it.</span>