Variation in duration of day and night is due to:
A. 1and 2
B. 2 and 3
C. 1 and 3
D. 1, 2 and 3
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The axis of rotation of earth is tilted by 23.5° to the plane of revolution around the sun. The latitude of Mumbai is less than 23.5° whereas the latitude of Delhi is more than 23.5°. Which one of the following statements in this regard is correct?
A. The sun can come overhead at both these places
B. The sun will never come overhead at either of these places
C. At Mumbai the sun can come overhead, but it will never do so at Delhi
D. At Delhi the sun can come overhead but it will never do so at Mumbai
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The point below the surface where an earthquake originates is called ________.
A. Tsunamis
B. Focus
C. Epicentre
D. Eye of the Earthquake
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The distance between two consecutive longitudes (91° E and 92° E) at the Poles is
A. 0 km
B. 18 km
C. 25 km
D. 111 km
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The place which has the longest day and the shortest night on 22nd December, is ________
A. Chennai
B. Madrid
C. Melbourne
D. Moscow
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Which of the following is caused by the combine deffects of the gravitational forces exerted by the Moon and the Sun on sea levels?
A. Currents
B. Runoff
C. Tides
D. Waves
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Which of the following phenomenon is/are the effect of the rotation of the Earth?
A. 1 and 3
B. 2 and 3
C. 1, 2 and 3
D. 1, 2, 3 and 4
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Japan is called 'land of the rising sun' because ________
A. Sun rises there as soon as it sets
B. Sun always remains in the eastern part of the sky throughout the day in Japan
C. Japan being the Eastern most country in the World, it has the earliest sunrise
D. The rays of the sun get reflected from the waters of the sea and make the sunrise beautiful in Japan
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Which of the following celestial body contains Helium-4 in abundance?
A. Earth
B. Moon
C. Venus
D. Saturn
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In the context of 'time' GMT means
A. General Meridian Time
B. Greenwich Mean Time
C. Global Mean Time
D. None of these
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One degree of longitude on the equator is equal to a distance of ________
A. 34.5 miles
B. 50 miles
C. 60 miles
D. 69 miles
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How much is the difference of time between any two consecutive longitudes?
A. 10 minutes
B. 14 minutes
C. 4 minutes
D. 30 minutes
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Albedo is defined as ________
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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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 ?
A. 97°30' E
B. 97°30' W
C. 82°30' E
D. 82°30' W
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The approximate diameter of the earth is ________
A. 4,200 Km
B. 6,400 Km
C. 12,800 Km
D. 15,600 Km
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The speed of rotation of the earth is ________
A. 25 km/sec.
B. 31 km/sec.
C. 39.5 km/sec.
D. 29.72 km/sec.
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The area of the Earth's total surface is of the order of ________.
A. 510 million square kilometres
B. 450 million square kilometres
C. 400 million square kilometres
D. 350 million square kilometres
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The distance of the equator from either of the poles is ________
A. 500 km
B. 5001 km
C. 10,002 km
D. 36,005 km
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The Earth rotates-around an axis pointing towards ________
A. The moon
B. The pole star
C. The sun
D. Venus
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When a ship crosses Date line from west to east ________
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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