universe & solar system section 1 MCQ Questions & Answers Detailed Explanation

Answer: (c)

The sky looks black from the space. In space, sunlight or any kind of star light does not have anything from which to bounce off.

Answer: (d)

Answer: (a)

Midnight Sun Occurs in Polar region in Summer months where sun remains visible at local midnight.

Answer: (d)

The nearness of Mercury to the massive gravity influence of the Sun is the likely reason that no natural satellites are present, although it is possible that one or more may have existed in the past.

Answer: (b)

The simplest model for the shape of the entire Earth is a sphere. The Earth’s radius is the distance from Earth’s center to its surface, about 6,371 kilometers (3,959 mi).

Earth is only approximately spherical, so no single value serves as its natural radius. Since the Earth is flattened at the poles and bulges at the equator, geodesy represents the shape of the earth with an oblate spheroid.

The oblate spheroid, or oblate ellipsoid, is an ellipsoid of revolution obtained by rotating an ellipse about its shorter axis.

Answer: (d)

The distance between two consecutive longitudes at the poles is 0 KM. A degree of longitude is widest at the equator at 69.172 miles (111.321) and gradually shrinks to zero at the poles.