How Are Astronomers Able to Determine That Quasars Are So

question 69

Multiple Choice

How are astronomers able to determine that quasars are so small

• A)They are variable over a short period of time.
• B)They emit mainly X-rays.
• C)They are only found at very large distance.
• D)The structure of a quasar is completely resolved in images.

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Definitions:

Leader-Participation Model

A leadership theory suggesting the effectiveness of a leader's decision-making is influenced by the appropriate involvement of subordinates.

Delegate

To entrust a task or responsibility to another person, typically one who is less senior in the organization.

Pollution Permit

A regulatory tool allowing entities to emit a specific amount of pollutants; often tradeable within a regulated market.

Pollution

The introduction of contaminants into the natural environment that causes adverse change, often resulting from human activity.