Question

How does sound travel from its source to your ear?
(a) By change in air pressure
(b) By vibration in wires and string
(c) By electromagnetic waves
(d) By infrared waves

Answer 1

Answer:

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.

Answer 2

sound travel from its source to your ear:-

a) By change in air pressure

• By change in the air pressure . Sound Swells entered the external observance and trip through a narrow hallway called the observance conduit , which leads to the eardrum .
• The eardrum vibrates from the incoming sound swells and sends these climates of three bits bones in the middle observance .
• Sound Climate travelled through a surge pattern , and we call these climate sounds swells .
• Sound to swell move by wobbling objects and these objects joggle other girding objects , carrying the sound along .

Explanation for incorrect:

b) By vibration in wires and string:The vibration creates an abecedarian frequency , according to the confines of the string or line , as well as its material .

• The vibration can also be in multiples of the abecedarian frequency .
• These are called harmonics . You can hear similar goods in strung instruments similar as a guitar and violin .

(c) By electromagnetic waves: In drugs , electromagnetic radiation consists of swelling to the electromagnetic field , propagating through space , carrying electromagnetic radiant energy .

• It includes radio swells , broilers , infrared , light , ultraviolet , X-rays , and gamma shafts . All of these swells form part of the electromagnetic diapason .

(d) By infrared waves:Infrared swells have longer wave lengths than visible light and can pass through thick regions of gas and dust with space with lower scattering and immersion .

• Therefore , infrared energy can also reveal objects of the macrocosm that can not be seen in visible light using optic telescopes.

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