universe & solar system section 2 MCQ Questions & Answers Detailed Explanation

Answer: (d)

1. The Sial refers to the composition of the upper layer of the Earth’s crust, namely rocks rich in silicates and aluminium minerals.
2. Sima is the name for the lower layer of the Earth’s crust. This layer is made of rocks rich in magnesium silicate minerals.
3. Nife is the innermost layer of earth.
4. Fossils are the remains of dead plants and animals trapped in rocks.

Answer: (b)

Answer: (c)

Earth is called the ‘Blue Planet’ due to the abundant water on its surface. This is because liquid water covers most of the surface of the planet.

The Earth has the right mass, chemical composition, and location can support liquid water.

Answer: (b)

Answer: (b)

The smallest planet of the solar system is Pluto while the largest is Jupiter.

The Planet second from the Sun in the solar system is Venus; the planet nearest to the Sun is Mercury.

Answer: (c)

In both astrology and historical astronomy, the zodiac is a circle of twelve 30° divisions of celestial longitude that are centered upon the ecliptic: the apparent path of the Sun across the celestial sphere over the course of the year.

Historically, these twelve divisions are called signs.