Waves: Question Preview (ID: 5966)

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Bow waves form when the wave source moves faster than the wave speed.
a) True
b) False

What shape of wake does a bow wave make in back of a moving object.
a) V
b) W
c) U
d) M

While jet-skiing on a lake you look back and notice a v-shaped pattern made by overlapping wave crests. This pattern is known as a
a) shock wave.
b) v wave
c) transverse wave
d) bow wave

If the speed of a the source is increased in a bow wave, the shape of the bow wave will be
a) narrower
b) broader
c) no change

A shock wave forms when an object moves faster than the speed of sound.
a) True
b) False

A shock wave has the shape of a
a) sphere
b) cone
c) triangle
d) parallelogram

A sonic boom is formed only at the moment an object breaks through the sound barrier.
a) True
b) False

An aircraft that flies faster than the speed of sound is said to be
a) subsonic.
b) supersonic.
c) semisonic.
d) ultrasonic.

A sonic boom is
a) swept continuously behind a plane flying faster than the speed of sound.
b) produced as a plane breaks through the sound barrier.
c) produced by subsonic projectiles as well as subsonic aircraft.

An observer on the ground hears a sonic boom that is created by an airplane flying at a speed
a) equal to the speed of sound.
b) greater than the speed of sound.
c) just below the speed of sound.

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