As Earth Rotates, the Apparent Motion of the Pole Star

question 180

Multiple Choice

As Earth rotates, the apparent motion of the pole star, Polaris, in a period of a day is

• A) a circle with a radius of 23.5°.
• B) a small circle with a radius of less than 1°.
• C) zero; there is no motion of the pole star, by definition.
• D) a slow but noticeable drift across the sky.

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Definitions:

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