Compared with the Total Output of Energy from the Milky

question 109

Multiple Choice

Compared with the total output of energy from the Milky Way Galaxy, what is the equivalent output of a typical quasar?

• A) only about 1/10 of the Galaxy's output but from a small volume of space
• B) 100 times brighter
• C) about a million times brighter
• D) about the same energy output

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Definitions:

Phenomenon

An observable event or a remarkable occurrence that can be scientifically described or investigated.

Null Hypothesis

An empirically testable hypothesis that two phenomena are entirely unrelated except perhaps by random chance.

Confirmatory Factor Analysis

A statistical technique used to verify the factor structure of a set of observed variables.

Experiment

A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact through controlled observation.