Change set

Pick exam & year, then Go.

Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q6 (CDS-I/2015) Geography › World Physical Geography › Earth rotation and time Answer Verified

The Earth without rotational movement would result into 1. no sun-rise and sun-set. 2. no occurrence of day and night cycle. 3. only one season. Select the correct answer using the code given below

Result
Your answer: —  Â·  Correct: B
Explanation

The Earth's rotation on its axis from West to East is the primary cause of the diurnal cycle, including sunrise, sunset, and the regular occurrence of day and night [3]. If rotation ceased, one side of the Earth would perpetually face the Sun while the other remained in darkness, effectively ending the 24-hour day-night cycle and the apparent motion of the Sun across the sky [1]. However, seasons are not caused by rotation; they are the result of the Earth's revolution around the Sun combined with its axial tilt [4]. Even without rotation, the Earth would still revolve around the Sun, and its tilted axis would still cause different hemispheres to receive varying amounts of solar energy throughout the year, maintaining seasonal changes [5]. Therefore, only statements 1 and 2 are correct consequences of a lack of rotation.

Sources

  1. [1] Science-Class VII . NCERT(Revised ed 2025) > Chapter 12: Earth, Moon, and the Sun > 12.1 Rotation of the Earth > p. 172
  2. [2] Science-Class VII . NCERT(Revised ed 2025) > Chapter 12: Earth, Moon, and the Sun > In a Nutshell > p. 184
  3. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 19: The Motions of The Earth and Their Effects > 19.1. Rotation of Earth > p. 251
  4. [4] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 19: The Motions of The Earth and Their Effects > Explanation: > p. 267
  5. [5] https://en.wikipedia.org/wiki/Effect_of_Sun_angle_on_climate
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
59%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

4 Cross-Linked PYQs

UPSC repeats concepts across years. Login to see how this question connects to 4 others.

Login with Google