Elsik Advanced Waves Quiz

What is the Doppler Effect?

• A change in frequency due to the relative motion of a wave source and an observer

• When a wave overlaps with another wave

• When a wave bounces off of another object

• When a wave bends due to traveling through a different medium

You are standing on the side of the road when a police car races past you with its siren on. After the police car passes you, what happens to the pitch of the siren?

• It increases

• It decreases

• It turns red

Look at the picture. Who is experiencing a higher pitched sound?

• Observer A

• Observer B

• There's no difference

Look at the picture. Who is experiencing a lower pitched sound?

• Observer A

• Observer B

• There is no difference

What direction is this object moving?

• left
• right
• up
• down

Swimming pools and the ocean look shallower than they really are due to:

• reflection 
• dispersion
• refraction
• total internal reflection

Based on their refractive indices (n), light has the highest velocity in which medium? flint glass n=1.70 barium glass n=1.60 crown glass n=1.523 water n=1.33

• crown glass

• water
• flint glass
• barium glass

What is this called?

• refraction
• reflection
• reconstroction
• retraction

What is this image showing?

• Reflection
• Refraction
• The law of reflection
• Concave Mirror

Why does the lower part of the child appear so much different in size from the upper part?

• The light rays that travel through water and then into air are refracted.
• The light rays that travel through water and then into air are enlarged.
• The light rays that travel through air and then into water are reflected.
• The light rays that travel through air and then into water are reduced.