Name: Star Systems and Types of Galaxies
Uploaded: 2019-07-19
Duration: 12 min 50 s
Description: Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. Let's watch this video to know more about it.

Question

Match the following.

Column A	Column B
1. Celestial objects	a. A satellite.
2. Stars	b. A planet.
3. Orbit	c. A star.
4. Constellation	d. A constellation.
5. Light year	e. The definite path of a planet revolving around the Sun.
6. Cassiopeia	f. A group of stars that form a recognisable pattern.
7. Sirius	g. Emit their own light.
8. Moon	h. Distance travelled by light in one year.
9. Venus	i. Objects in the sky.

Accepted Answer

Celestial objects are the objects present in the space such as the sun, the moon, planets, stars etc.

Stars are luminous bodies which emit their own light. It is also a celestial object.

Orbits are the definite path along which the planets are revolving around the Sun.

A constellation is a group of stars that form a recognisable pattern. Orion is one of the well-known constellations.

Distance travelled by light in one year is equal to one light year. It is the unit of distance.

Cassiopeia is the name of a constellation in the northern sky.

Sirius is the brightest star in the sky and it is very close to the Orion.

Moon is the natural satellite of the Earth. It is a non-luminous body.

Venus is the second planet from the Sun. It is, therefore, an inner planet.

Column A Column B

1. Celestial objects i. Objects in the sky.

2. Stars g. Emit their own light.

3. Orbit e. The definite path of a planet revolving around the Sun.

4. Constellation f. A group of stars that form a recognisable pattern.

5. Light year h. Distance travelled by light in one year.

6. Cassiopeia d. A constellation.

7. Sirius c. A star.

8. Moon a. A satellite.

9. Venus b. A planet.

Important Questions on Stars and the Solar System

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