Test: Stars & the Solar System- 2 - UPSC MCQ

Water in liquid form is found only on the earth. Water is essential for survival of life. On earth water is present as solid, liquid and gaseous state.

Planets revolve around the Sun on fixed path. The path of planet around the Sun is called its orbits.

Sun is huge ball o gases emitting heat and light due to nuclear fusion. The size of Sun is very much larger than earth

Moon is the brightest object in clear night sky. Moon reflects the light of sun as it does not have its own light.

Moon is the natural satellite of earth as moon revolves around the sun in fixed orbit. Moon reflect the light of Sun.

The various shapes of bright part of moon is called phases of moon. The shape of moon keeps changing every day.

Jupiter's Great Red Spot is a gigantic storm that's about twice as wide as Earth, circling the planet in its southern hemisphere.

The Moon is the planets nearest to the Earth. All of these celestial bodies are continuously held captive to the sun by the effect of gravity; the bodies are continually forced to orbit the sun as the central body in elliptical orbits.

Neptune is far from the Sun. Due to far distance Neptune have very low temperature as light of sun reaches less there.

A piece of rock which burns as it falls through the earth atmosphere due to friction is called meteor

The Sun is a star that emits heat and light. Sun appear larger than other stars due to closeness from earth.

Million of stars together make a galaxy. Our solar system falls under the milky way galaxy.

Satellites are small celestial body revolving around a planet. Moon is the natural satellite of earth.

Mars, Saturn and Mercury are planets of earth that revolve around the Sun. Moon is the natural satellite of Sun.

One light year is the distance travelled by light in one year, i.e. 

9.46×10¹²km.

In solar system, planets revolve around the Sun. Earth lies between planet Venus and Mars.

Celestial bodies that emit heat and light throughout the year are called stars. Stars are huge ball of gases that emit heat and light.

The distance traveled by light in one year is called light year. Light year is unit of large distance.

There are eight planets in our solar system. They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Orbit is the gravitationally curved path of an object about a point in space