The Crab Nebula Is the Result of a Supernova Explosion

question 328

Multiple Choice

The Crab Nebula is the result of a supernova explosion of a star that occurred at a distance of about 1.84 kpc from Earth.If people first saw the explosion in a.d.1054,when did the explosion actually occur?

• A) about a.d.1048
• B) 786 b.c.
• C) a.d. 1054, of course
• D) about 4946 b.c.

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Definitions:

Generalization

The process by which the brain applies learned responses to similar stimuli beyond the original situation.

Conditioned Response

A learned reaction to a previously neutral stimulus that has become associated with an unconditioned stimulus.

Neutral Stimulus

A stimulus that initially does not elicit any intrinsic response until it is paired with an unconditioned stimulus in classical conditioning.

Conditioned Stimulus

A previously neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response.