12. Explain how you can locate the Pole Star with the help of Ursa Major.
We can locate the Pole Star with the help of Ursa Major by the following steps:
(i) Perform activity on a clear moonless night during summer at about 9.00 pm.
(ii) Look towards the northern part of the sky and identify Ursa Major.
(iii) Look at the two stars at the end of Ursa Major.
(iv) Imagine a straight line passing through these stars as shown in figure.
(v) Extend this imaginary line towards the north direction. This line will lead to a star which is not too bright. This is the Pole star.
Pole star is situated at the end of end ursa major. If an imaginary Straight line starting from the last two stars is extended towards the north direction it will lead to the pole star .
Pole star is not too bright