Sound waves

Question 1

What are sound waves caused by

Answer 1

Vibrating objects

Question 2

How are vibrations passed through the surrounding

Answer 2

As a series of compressions and rarefactions

Question 3

Is sound a types of longitudinal or transverse wave

Answer 3

Longitudinal

Question 4

How do speakers transmit sound

-the paper d… vibrates back and f…, causing s… air to v… creating c… and rarefactions
-a s… wave is created
-when the sound w… hit a s…, the particles h… the solid causes the p… in the o… to v…
-these particles h… the next particles p… the sound w… on

Answer 4

-the paper diaphragm vibrates back and forth, causing surrounding air to vibrate creating compressions and rarefactions
-a sound wave is created
-when the sound waves hit a solid, the particles hitting the solid causes the particles in the object to vibrate
-these particles hit the next particles passing the sound waves on

Question 5

Why can sound travel through a vacuum

Answer 5

-there are no particles to vibrate

Question 6

Parts of the ear

-a… canal
-ear d…
-a…
-h…
-o…
-s… canals
-c…
-auditory n…

Answer 6

-auditory canal
-ear drum
-anvil
-hammer
-ossicles
-semicircular canals
-cochlea
-auditory nerve

Question 7

How do humans hear sound

-sound w.. enter the a… canal and reach the e… causing it to v…
-these v… are passed onto small b… called o… in the ear through the s… canals to the c…
-the c… turns these vibrations into e… signals which get sent to your b…

Answer 7

-sound waves enter the auditory canal and reach the eardrum causing it to vibrate
-these vibrations are passed onto small bones called ossicles in the ear through the semicircular canals to the cochlea
-the cochlea turns these vibrations into electrical signals which get sent to your brain

Question 8

Humans hearing frequency

Answer 8

20-20k Hz

Question 9

What are echos

Answer 9

Reflected sound waves

Question 10

What happens when sound waves enter a denser material

Answer 10

They speed up