Define three heat zones of the Earth.

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What is the difference between local time and standard time?

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How can we calculate rate of time difference?

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How can any place be determined by a grid? Explain it with example.

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Draw a diagram of the globe showing the earth's axis, the equator, tropics of Cancer and Capricorn,
Arctic circle and Antarctic circle and answer the question that follow.

(i) What is value of the Tropic of Cancer?
(ii) Which of the following zones is situated between 66^o30 's and poles?

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Explain the important parallels of latitudes?

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

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Draw the diagram of a grid.

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Distinguish between parallels of latitudes and meridians of longitudes.

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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?

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