Question

What time does earth take, rotating from one degree longitude to next longitude?
(a ) 4 minutes
(b) 15 minutes
(c) 10 minutes
(d) 6 minutes

Answer 1

a. 4 minutes

To rotate 1 degree Earth takes 4 minutes.

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Answer 2

(a ) 4 minutes

Explanation:

• The longitude degrees are rotating with the Earth. It does not switch from degree to another. It takes the Earth four minutes (1440 minutes per day/360° in a circle) to rotate one degree.
• It takes 24 hours on average from the time the Sun is straight over a certain longitude until the Sun is straight over the same longitude . All over the planet there is a longitude of 360°. When we divide 24 hours by 360°, we have a duration of 4 minutes per degree of longitude .