21- The moon is the only …………….of the earth.
(A) Satellite
(B) Planet
(C) Star
(D) All of the above
22- Jupiter, Saturn and Uranus have………………around them.
(A) Clouds
(B) Ring
(C) Gases
(D) Asteroids
23- The sun is made up of extremely hot ……………
(A) Heat
(B) Light
(C) Gases
(D) Liquid
24- The sun is about ……………..million km away from the earth.
(A) 25
(B) 50
(C) 100
(D) 150
25- All the ………………….. of the solar system move around the sun in a fixed paths. They are called orbits.
(A) Stars
(B) Meteoroids
(C) Asteroids
(D) Eight Planets
26- ……………. is the nearest to the sun
(A) Mercury
(B) Mars
(C) Venus
(D) Earth
27- ………………….takes about 88 days to complete one round along its orbit.
(A) Sun
(B) Mercury
(C) Earth
(D) Venus
28- Which of the following is considered as Earth’s-twin because it is similar to that of earth in its shape and size?
(A) Mercury
(B) Mars
(C) Venus
(D) None
29- Pluto was also considered a ………………… in August 2006.
(A) Venus
(B) Mercury
(C) Mars
(D) Planet
30- Which of the following organization considered Pluto as a dwarf planet?
(A) International Astronomical Union
(B) Indian Astronomical Union
(C) International Astronomic Union
(D) None of the above
ANSWERS:
21-(A), 22-(B), 23-(C), 24-(D), 25-(D), 26-(A), 27-(B), 28-(C), 29-(D), 30-(A)