1. Answer the following questions briefly,
(a) How does a planet differ from a star?
(b) What is meant by the 'Solar System'?
(c) Name all the planets according to their distance from the sun.
(d) Why is the Earth called a unique planet?
(e) Why do we see only one side of the moon always?
(1) What is the Universe ?
Answers
Answer:
(a) A planet has big and not made of gas and star was made for gas
(b) solar system have 8 planet
(c) Mercury,venus, earth,Mars,saturn, Jupiter,uranus, Neptune.
(d) because earth have all possibilities which don't have any plantet
(e) because earth rotatate their axis but moon rotate around the sun
(f) the universe has many galaxies called universe
Answer:
a) a planet is solid and round around the star
a star is gas form
b) a group of planets, Stones, dust has a common sun is known as solar system
c) 1 mercury , 2vinus, 3earth, 4mars , Jupiter, saturn, Uranus, Neptune
d) the life is survived is only earth in solar system so earth is called the unique planet
e ) because the other side is opposition side on the earth
1 ) the group of the group solar systems make a gallexis and the group of galleixies is known as univers