universe & solar system section 9 Practice Questions Answers Test with Solutions & More Shortcuts

Universe, solar system and Astronomy PRACTICE TEST [13 - EXERCISES]

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Question : 36 [SSC Delhi Police SI 2015]

In a solar or lunar eclipse, the region of the earth’s shadow is divided into

a) Two parts

b) Three parts

c) Four parts

d) Five parts

Discuss »

Answer: (b)

An eclipse occurs when a star (such as Sun) aligns with two celestial bodies, such as a planet and a moon. The closer body casts a shadow that intersects the more distant body. This means that “things get dark.”

The region of the shadow is divided into an umbra, where the light from the star is completely blocked, and a penumbra, where only a portion of the light is blocked.

Beyond the end of the umbra is a region called the antumbra. For an observer inside the antumbra of a solar eclipse, for example, the moon appears smaller than the sun, resulting in an annular eclipse.

Question : 37 [IAS (Pre) 2002]

Sun’s halo is produced by the refraction of light in

a) Ice crystals in Cirrus clouds

b) Dust particles in Stratus clouds

c) Ice crystals in Cirro-Cumulus clouds

d) Water vapour in stratus clouds

Discuss »

Answer: (a)

Question : 38

The mouth of a volcano is known as

a) Crater

b) Pipe

c) Cone

d) Glacier

Discuss »

Answer: (a)

Question : 39 [PSC (Pre) 2019]

Which of the following does not belong to the solar system?

a) Planets

b) Nebula

c) Comets

d) Asteroids

Discuss »

Answer: (b)

Question : 40 [UPPCS (Pre) 2001]

The milky way is classified as

a) Irregular Galaxy

b) Round Galaxy

c) Electrical Galaxy

d) Spiral Galaxy

Discuss »

Answer: (d)

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