Explain the important parallels of latitudes?

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(a)

How can we calculate time using longitudes?

5

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Which longitude is taken as the International Date Line and why?

5

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Draw the diagram of a grid.

5

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Why is it necessary to have standard time? Also define Indian Standard Time (IST).

5

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Draw a diagram of the Earth showing :
(i) Equator
(ii) Tropic of Cancer
(iii) Tropic of Capricorn
(iv) Frigid Zone
(v) North Temperature
(vi) South Temperate Zone
(vii) Arctic Circle
(viii) Antarctic Circle
(ix) Torrid Zone

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(a)

Distinguish between parallels of latitudes and meridians of longitudes.

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In the given diagram mark the important parallels of Latitudes.
(i) Equator
(ii) Tropic of Cancer
(iii) Tropic of Capricorn
(iv) Arctic Circle
(v) Antarctic Circle

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In the world map, mark the following:
(i) Southern Hemisphere
(ii) Eastern Hemisphere
(iii) Western Hemisphere
(iv) Greenwich
(v) Northern Hemisphere

5

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The local time at the longitude 821/2° E is taken as the Standard Time for the whole country of India. It is known as Indian Standard Time (IST).
(i) What is the importance of IST?
(ii) What time zone is India in?

5

(a)