A Planetary Nebula

question 10

Multiple Choice

A planetary nebula

• A) produces an absorption spectrum.
• B) produces an emission spectrum.
• C) is contracting to form planets.
• D) is contracting to form the star.
• E) is the result of carbon detonation in a 1.

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Definitions:

Volley Principle

Theory of pitch that states that frequencies from about 400 Hz to 4,000 Hz cause the hair cells (auditory neurons) to fire in a volley pattern, or take turns in firing.

Frequency Theory

Theory of pitch that states that pitch is related to the speed of vibrations in the basilar membrane.

Hammer (Malleus)

A bone in the middle ear that transmits sound vibrations from the eardrum to the other ossicles.

Stirrup (Stapes)

A small bone in the middle ear that is involved in transmitting sound vibrations to the inner ear.