5. How does the sound travel?
What is an echo?
5. How do we hear sound?
Answers
Explanation:
how does the sound travel ?
Sound waves travel at 343 m/s through the air and faster through liquids and solids. The waves transfer energy from the source of the sound, e.g. a drum, to its surroundings. Your ear detects sound waves when vibrating air particles cause your ear drum to vibrate. The bigger the vibrations the louder the sound.
defination of echo:--
a sound or sounds caused by the reflection of sound waves from a surface back to the listener.
how do we hear sound?
Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. These bones are called the malleus, incus, and stapes.