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  1. One degree of longitude on the equator is equal to a distance of ________

  2. A.

     34.5 miles

    B.

     50 miles

    C.

     60 miles

    D.

     69 miles

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  3. How much is the difference of time between any two consecutive longitudes?

  4. A.

     10 minutes

    B.

     14 minutes

    C.

     4 minutes

    D.

     30 minutes

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  5. Albedo is defined as ________

  6. A.

     UV radiations sent out by the SUN

    B.

     A substance contained in the upper atmospheric layers of the earth, which is responsible for the reflection of/a part of solar radiations

    C.

     Celestial bodies in earth's atmosphere which add to the greenhouse effect

    D.

     The amount of insolation reflected back to the space by the top of atmosphere, by clouds and ice-covered areas of the Earth's surface

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  7. When the clock strikes 12:00 noon at Greenwich, it strikes 5:30 p.m. at place X on the same day. What is the meridian of longitude of place X ?

  8. A.

     97°30' E

    B.

     97°30' W

    C.

     82°30' E

    D.

     82°30' W

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  9. The approximate diameter of the earth is ________

  10. A.

     4,200 Km

    B.

     6,400 Km

    C.

     12,800 Km

    D.

     15,600 Km

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  11. The speed of rotation of the earth is ________

  12. A.

     25 km/sec.

    B.

     31 km/sec.

    C.

     39.5 km/sec.

    D.

     9.72 km/sec.

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  13. The area of the Earth's total surface is of the order of ________.

  14. A.

     510 million square kilometres

    B.

     450 million square kilometres

    C.

     400 million square kilometres

    D.

     350 million square kilometres

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  15. The distance of the equator from either of the poles is ________

  16. A.

     500 km

    B.

     5001 km

    C.

     10,002 km

    D.

     36,005 km

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  17. The Earth rotates-around an axis pointing towards ________

  18. A.

     The moon

    B.

     The pole star

    C.

     The sun

    D.

     Venus

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  19. When a ship crosses Date line from west to east ________

  20. A.

     It loses one day

    B.

     It gains one day

    C.

     It loses half a day

    D.

     It gains half a day

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