The process, as well as the reflected sound, are both called "echo".
"Noise" is caused.
echo
It bounces back; echoes.
Yes. A sound wave was sent from a source which made a noise, it hit some solid object and was reflected back to the hearer, who hears the echo some time after hearing the original noise.
When an object hits through which it can not pass it bounces back
When light hits an object/surface, it's either reflected, absorbed, or refracted. For light to bounce back, the reflection has to be "specular", like a mirror. So the light bounces back with the same(reflected) image. For light to be reflected back at the source. The light has to hit perpendicular to the surface, which is 90°.
PLease help me
echo
It bounces back; echoes.
Yes. A sound wave was sent from a source which made a noise, it hit some solid object and was reflected back to the hearer, who hears the echo some time after hearing the original noise.
The light has been reflected back off the object.
When an object hits through which it can not pass it bounces back
You hear an echo
The ultrasound principle is this: when a high-frequency sound is produced and aimed at a target, it will be reflected by its target and the reflected sound can be detected back at its origin.
When light hits an object/surface, it's either reflected, absorbed, or refracted. For light to bounce back, the reflection has to be "specular", like a mirror. So the light bounces back with the same(reflected) image. For light to be reflected back at the source. The light has to hit perpendicular to the surface, which is 90°.
White light contains all the colors mixed together. A colored object has a pigment on its surface that ABSORBS all these colors except one. This one color is reflected back off the object. Thus, as we see the object by this reflected light coming from the object into our eyes, the object appears to be colored.
sonar
Sound energy that pass through a solid is said to be reflected because as sound waves pass from air to a solid, some of the energy is reflected back into the air. Some of the energy will be absorbed by the new medium.