As you watch a star, you see it move 15 degrees across the sky. How long have you been watching it?
A) 1 hour
B) 1 minute
C) 15 minutes
D) 15 seconds
E) 3 hours

Name: As you watch a star, you see it move 15 degrees across the sky. How long have you been watching it? A) 1 hour B) 1 minute C) 15 minutes D) 15 seconds E) 3 hours
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Question

Quizplus · Accepted Answer

The Earth rotates 15 degrees per hour, so if a star appears to move 15 degrees across the sky, it indicates an hour has passed.

As You Watch a Star, You See It Move 15