1.)an ambulance has its siren on. what direction is the ambulance moving relative to you if the siren is decreasing in pitch?
a
behind you
b
maintaining the same position
c
toward you
d
away from you
2.) loud sounds can affect your hearing by damaging the hairs and nerve cells in the cochlea.
a
true
b
false
3.) a large explosion can damage a person's hearing. what causes this damage?
a
the explosion triggers smaller explosions inside the ear.
b
compression waves from the explosion cause vibrations that damage the ear.
c
transverse waves from the explosion cause vibrations that damage the ear.
d
heat from the explosion burns the eardrum.
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