How many degrees does the Earth rotate about its own axis in one hour?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 15.
- The earth turns once on its axis in 24 hours.
- This rotation is a full 360°. So, in one hour, the earth turns 15°.
- Every four minutes, the earth has turned one degree.
- In one minute of time, the earth has turned 15 minutes of arc. So, every four seconds of time, the earth rotates one minute of arc.
- Note: The Earth is tilted 23.5° degrees on its axis.