Question

If a star rises at 7 pm tonight, it will rise at_______ tomorrow.

• A. 6:56 am
• B. 7:05 pm
• C. 6:56 pm
• D. 6:00 pm

Answer 1

The correct option is C 6:56 pm

As we know that, the Sun and the moon are seen to move from the west to the east against the background of stars. The Sun moves through one degree every day and the moon through 12 to 13 degrees. This happens due to the motion of the earth around the sun and that of the moon around the earth. These motions affect the duration of the stars and shortens their time periods.
Due to this, the stars rise and set 4 minutes earlier every day.
So, if a star rises at 7 pm tonight, it will rise 4 minutes earlier tomorrow, i.e. at 6:56 pm.