Star is a celestial body

They are extremely hot and emit light of their own

Example

Sun is the nearest star to us

Alpha Centauri is second nearest star to us

stars.jpg

 

Why are stars not visible during daytime?

Stars are present during day also

They are not visible due to bright sunlight

Stars not visible during the day

 

Why do stars appear from east to west?

Actually stars do not move

Because earth rotates from west to east on its axis ,it appears that stars appear to move from east to west

(Just like when we sit in moving train,it appears that all the nearby trees and buildings are moving backwards,but they are actually not moving)

 

 

Which star does not appear to move?Why?

Pole star does not appear to move

It is because it lies close to axis of rotation of earth

So even when earth rotates,it does not seem to change

Pole star is in the axis of the earth.jpg

 

The actual rotation lookslike

 

 

Pole Star Rotation

 


Questions

NCERT Question 13 - Do all the stars in the sky move? Explain.

View Answer

  1. Class 8
  2. Chapter 17 Class 8 - Stars and the Solar System

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.