Which atmospheric phenomenon causes stars to twinkle? MCQ with Answer and Explanation

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Which atmospheric phenomenon causes stars to twinkle?

A. Diffraction

B. Reflection

C. Dispersion

D. Refraction

Answer: Option D

Solution (By JKSSB Mock Tests)

Stars appear to twinkle because their light is refracted by layers of Earth's atmosphere.

This question belongs to: Geography GK Physical Geography

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Practice More Physical Geography Questions

Question #1

Which plate boundary is most commonly associated with powerful earthquakes?

A. Continental Shelf

B. Divergent Boundary

C. Transform Boundary

D. Passive Margin

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Correct Answer: Option C

Explanation:
Transform boundaries involve plates sliding past each other, generating strong earthquakes.

This question belongs to: Geography GK Physical Geography

Question #2

The Walker Circulation is most closely associated with:

A. El Niño-Southern Oscillation

B. Jet streams

C. Plate tectonics

D. Monsoon troughs

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Correct Answer: Option A

Explanation:
Walker Circulation is a major atmospheric circulation pattern in the tropical Pacific.

This question belongs to: Geography GK Physical Geography

Question #3

Which intrusive igneous feature cuts across existing rock layers?

A. Sill

B. Laccolith

C. Dike

D. Batholith

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Correct Answer: Option C

Explanation:
A dike cuts across surrounding rock layers, unlike a sill which runs parallel.

This question belongs to: Geography GK Physical Geography

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