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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