How is planet different from satellites in origin and characteristics?

5

(a)

How can we say that asteroids and meteoroids are different from each other? How meteoroids are connected with the Earth?

5

(a)

Why is the life existing on the Earth only?

5

(a)

Write a note on galaxy and universe?

5

(a)

(i) How many satellites does Mars have?
(ii) How many planets are there in above picture?

5

(a)

Why is life found on the Earth?

5

(a)

Why is Pluto not considered as a planet?

5

(a)

Write a note on the Sun.

5

(a)

What was the method used in ancient times by the people to determine direction?

5

(a)

Why is life on Mars not possible?

5

(a)