What Is the Baseline That Astronomers Use to Measure the Parallax

question 16

Multiple Choice

What is the baseline that astronomers use to measure the parallax (the distance) of the nearest stars?

• A) the diameter of the Earth
• B) the distance between observatories in Greenwich, England and Washington, DC
• C) the distance between the Earth and the Moon
• D) ½ the diameter of the Earth's orbit around the Sun
• E) no one can measure parallax for the stars; only for planets in our solar system

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Definitions:

Motivation

An inferred process within a person or animal that causes movement either toward a goal or away from an unpleasant situation.

Unpleasant Situation

A scenario or event that is disagreeable, uncomfortable, or causes distress to an individual.

Extrinsic Motivation

Motivation driven by external rewards such as money, fame, grades, or praise.

External Rewards

Benefits or incentives provided by an external source, such as money, praise, or recognition, that motivate behavior.