A pebble tossed into a still one creates a disturbance that moves outward along the surface of the water as a wave. The continuous blowing of the wind causes wheat to move in a wavelike pattern.
The boating the water simply bobs up and down as waves roll by.
The telescope of the Very Large Array in New Mexico collect invisible waves that travel with or without a medium.
Electromagnetic waves of different frequencies produce rainbows. In fact, the same kinds of waves at lower frequencies are used to heat food in microwave ovens. A curious pooch can detect sounds of higher frequencies than you can.
A wave on a rope is the same type of wave that carries sunlight to your eyes.
The vibration of a drum head produces compressions and rarefactions in the air. So do the melodious voices of singers in a choir.
Geophysicists use a common technique to send sound waves downward through rocks. The sounds waves are then reflected from the rock layers back to the surface. By recording the time it takes for the waves to travel through the various regions, geophysicists can determine the component of the rock layers.
You see lightning, even at a great distance, before you hear thunder because light travels at a greater speed than sound. Nothing is known to travel faster than the speed of light. If you oppose that then identify it in the comment area.
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