Question

4. How can the position of Pole star in the sky be located with the help of Ursa Major ?
5. Write three main uses of artificial satellites.​

Answer 1

Answer:

4.Answer: Follow these steps for locating the pole star:

1. 4.Answer: Follow these steps for locating the pole star:Locate the Ursa Major and locate the quadrilateral in it.
2. 4.Answer: Follow these steps for locating the pole star:Locate the Ursa Major and locate the quadrilateral in it. Select the two stars on the far side of the quadrilateral.
3. 4.Answer: Follow these steps for locating the pole star:Locate the Ursa Major and locate the quadrilateral in it. Select the two stars on the far side of the quadrilateral. Join these stars with a line and extend this imaginary line towards the top of the ladle.
4. 4.Answer: Follow these steps for locating the pole star:Locate the Ursa Major and locate the quadrilateral in it. Select the two stars on the far side of the quadrilateral. Join these stars with a line and extend this imaginary line towards the top of the ladle. A faint star which meets this line is the pole star.

5. The three main uses of artificial satellite:

1. Scientific Investigation.
2. Earth observation - including weather forecasting and tracking storms and pollution.
3. Communications - including satellite television and telephone calls.
4. Navigation - including the Global Positioning System (GPS)

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