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

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Which atmospheric phenomenon causes stars to twinkle?

A. Reflection

B. Refraction

C. Diffraction

D. Dispersion

Answer: Option B

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

The average salinity of ocean water is approximately:

A. 15‰

B. 25‰

C. 45‰

D. 35‰

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Correct Answer: Option D

Explanation:
The average salinity of ocean water is about 35 parts per thousand (35‰).

This question belongs to: Geography GK Physical Geography

Question #2

Peridotite is primarily found in:

A. River deltas

B. Continental crust

C. Ocean floor sediments

D. Earth's mantle

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Correct Answer: Option D

Explanation:
Peridotite is an ultramafic rock that represents the composition of much of the upper mantle.

This question belongs to: Geography GK Physical Geography

Question #3

The rain shadow effect is best demonstrated by:

A. Congo Basin

B. Siberian Plain

C. Amazon Basin

D. Atacama Desert

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Correct Answer: Option D

Explanation:
The Atacama lies in the rain shadow of the Andes and is also influenced by a cold ocean current.

This question belongs to: Geography GK Physical Geography

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