Page 102 - SST Class 06

3. Our Solar System is a part of :
(a) Milky Way (b) Akash Ganga (c) both

4. A comet is a huge lump of ______________ .
(a) snow (b) rocky dust (c) both
5. The average distance of the Sun is about ______________ .
(a) 13 crore km (b) 14 crore km (c) 15 crore km

6. The Earth is the ______________ nearest planet to the Sun.
(a) fourth (b) third (c) fifth
7. Saptarishi is a group of ______________ stars.

(a) seven (b) eight (c) nine
8. Halley’s Comet was last seen in ______________ .
(a) 1986 (b) 1987 (c) 1976

B. Name any two :
1. celestial bodies : (a) ______________ (b) ______________
2. terrestrial planets in the Solar System : (a) ______________ (b) ______________

3. gas giants in the Solar System : (a) ______________ (b) ______________
4. names of the Earth : (a) ______________ (b) ______________
5. American astronauts : (a) ______________ (b) ______________
6. types of satelletes : (a) ______________ (b) ______________

C. Match the following :
1. Celestial bodies u u A small body which revolves round the Sun.

3. Milky Way u u A small piece of solid mass revolving round the Sun.
4. Orbit u u A body which revolves round a planet.
5. Satellite u u A galaxy in the universe, which is parent to the Solar System.
6. Asteroid u u The elliptical path on which a planet moves round the Sun.

7. Meteor u u All bodies present in the universe, like stars, planets, satellites etc.

D. Fill in the blanks with help from the box :
Pole, wax, Big Bang, Halley’s, terrestrial, light years
1. It is believed that the universe came into being as a result of the ______________ .
2. Distance in the space is measured by ______________ .

3. The ______________ Star always shines in the north direction.
4. The rocky planets are called the ______________ planets.
5. When the Moon changes its shape from New Moon to Full Moon, it is said to ______________ .
6. The ______________ Comet appears after every 76 years.

E. Distinguish between :
1. A star and a planet.

2. The universe and the Milky Way.
Contemporary Social Science-6
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