universe & solar system section 5 MCQ Questions & Answers Detailed Explanation

Answer: (b)

The interior structure of the Earth is layered in spherical shells, like an onion. These layers can be defined by their chemical and their rheological properties.

Earth has an outer silicate solid crust, a highly viscous mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core. Sudden movements of the interior of the earth cause earthquakes.

Answer: (a)

Thermal Equator is an imaginary line round the earth running through the point on each meridian with the highest average temperature. It lies mainly to the north because of the larger landmasses and thus greater summer heating.

Answer: (a)

Only two planets Venus and Uranus revolve around the sun from east to west while other planets revolve around the sun from west to east.

Answer: (a)

Venus is a planet whose period of rotation is longer than the period of revolution around the sun. The period of rotation for Venus is 243 days.

In other words, Venus takes 243 days to turn once on its axis so that the stars are in the same position in the sky.

Answer: (a)

Answer: (d)