universe & solar system section 12 MCQ Questions & Answers Detailed Explanation

Answer: (d)

Like the other planets in our solar system, Venus rotates about its axis.

However, Venus is the only planet that rotates from east to west instead of west to east. This means, that if we lived on Venus, the Sun would appear to rise in the west in the morning, and set in the east in the evening. Venus rotates in what is called retrograde motion.

Answer: (a)

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a super massive black hole in the middle.

Answer: (b)

Answer: (b)

A. The smallest planet of the solar system is – Pluto

B. The largest planet of the solar system is – Jupiter

C. The planet second from the Sun in the solar system is – Venus

D. Planet nearest to the Sun is – Mercury.

Answer: (b)

The Earth rotates around its axis from west to east. Earth’s rotation is the rotation of the solid Earth around its own axis. The Earth rotates from the west towards the east. As viewed from the North Star or polestar Polaris, the Earth turns counter-clockwise.

Answer: (d)

Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, an ultraviolet light.

On Earth, sunlight is filtered through the Earth’s atmosphere, and is obvious as daylight when the Sun is above the horizon.