universe & solar system section 3 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (c)

Answer: (a)

The nearest large galaxy of Milky Way is the Andromeda galaxy. The Andromeda Galaxy is a spiral galaxy approximately 2.5 million light-years from Earth in the Andromeda constellation. Also known as Messier 31, M31, or NGC 224, the sun’s nearest known star is a red dwarf star called Proxima Centauri.

Proxima Centauri is a red dwarf about 4.24 light-years from the Sun, inside the G-cloud, in the constellation of Centaurus.

Answer: (a)

The planet Venus rotates clock wise. On Venus, the rotation is backwards, or clockwise, which is called retrograde. Standing on the surface of Venus, one would be able to see the sun rising from the west.

Answer: (b)

The term SYZYGY is referred to when the moon, sun, and earth lie along a straight line. As seen from the Earth, a solar eclipse is a type of eclipse that occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks (“occults”) the Sun.

This can happen only at the new moon, when the Sun and the Moon are in conjunction as seen from Earth in an alignment referred to as SYZYGY.

In a total eclipse, the disk of the Sun is fully obscured by the Moon. In partial and annular eclipses only part of the Sun is obscured.

Answer: (a)

An Astronomical Unit is the mean distance between the Earth and the Sun.

1 AU = 149,597,870.700 kilometers.