Question

Q1. answer the following
a) what is atmosphere?
b) what is Polar star ?
c) define the terms of constellation and give example?
d) what is galaxy
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Answer 1

Answer:

Hey dear here is your answers

(a) An atmosphere is a layer or set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body.

(b) A pole star Or polar star is a star preferably bright , nearly aligned with the axis of a rotating astronomical body .

(c) A groups of star forming a recognizable

Answer 2

Answer:

1.atmoshpere is a layer of gases around the earth.

2.a bright star that can be seen in the sky in northern parts of the world when one looks directly towards the north.

3. constellation is a group of stars which make up imaginary outline or pattern in the night sky

eg:- Ursa major,leo,cancer

4. a galaxy is a group of stars with gasses,dust and dark matter