Quasars

question 41

Multiple Choice

Quasars:

• A) are more common in nearby clusters of galaxies and less common in distant clusters of galaxies.
• B) are rare in the Local Group, with only one or two examples.
• C) increase in number as redshift increases, a relationship that persists to the highest redshifts we can measure.
• D) peaked in number about 2 billion years after the Big Bang.

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Definitions:

Price Level

The average of current prices across the entire spectrum of goods and services produced in the economy, often used as an indication of inflation.

Base Year

A reference year used for comparative analysis, often in calculating economic indicators like indexes.

Absolute Change

The difference between the final value and the initial value of a quantity, without regard to the direction of change.

Price Level

A summary average of current prices for the full spectrum of goods and services in the economy.