Q. Which of the following are true regarding the crust of the earth? I. It is the outer thin layer with a total thickness of about 100 km II. It forms around 0.5% of the earth’s volume III. The outer covering of the crust is of sedimentary material IV. The lower layer of the crust consists of basaltic and ultra-basic rocks

Correct Answer

I, II and IV

More Questions on Earth

  • Q. The Earth turns through 360° in 24 hours. Each 15° longitude represents ________
    A)One hour
    B)Half an hour
    C)Forty five minutes
    D)One hour fifteen minutes
    Answer: One hour
  • Q. Which of the following statements regarding the earth’s axis are true? 1. It makes an angle of 23.5o with the plane of ecliptic 2. It maintains a flexible orientation with respect to the stars 3. It is the most important fact connected with Earth-Sun relationship
    A)1 and 3
    B)1 and 2
    C)2 and 3
    D)1, 2 and 3
    Answer: 1 and 3
  • Q. Which of the following pair is incorrect?
    A)0° latitude - Equator
    B)0° longitude - Prime Meridian
    C)0° longitude - Equator
    D)23.5° North - Tropic of Cancer
    Answer: 0° longitude - Equator
  • Q. Which one of the following organisations is responsible for publishing topographical sheets?
    A)Indian Meteorological Department (I.M.D.)
    B)Geological Survey of India (G.S.I.)
    C)National Atlas & Thematic Mapping Organisation (N.A.T.M.O.)
    D)Survey of India (S.O.I.)
    Answer: Survey of India (S.O.I.)
  • Q. Isobar lines show
    A)Depth
    B)Pressure
    C)Rain
    D)Time
    Answer: Pressure
  • Q. The Synchronous satellite moves around the Earth from
    A)North to South
    B)East to West
    C)West to East
    D)South to North
    Answer: West to East
  • Q. Consider a specific point on the surface of the earth (say Delhi). The temperature at a given time of day (say 12.00 Noon) will in general be higher in summer than in winter. This is because ________
    A)The earth is closer to the sun in summer than in winter
    B)The evaporation of water from atmosphere results in precipitation occurring in winter alone
    C)Sun-rays falling on the earth are inclined more towards the sun in winter
    D)The axis of the earth is inclined more towards the sun in winter
    Answer: Sun-rays falling on the earth are inclined more towards the sun in winter
  • Q. One day in Mumbai a tide occurs at 8.00 A.M. The next day it will occur at ________
    A)8.52 AM
    B)8.13 AM
    C)8.26 AM
    D)8.56 AM
    Answer: 8.52 AM
  • Q. Study the following diagram and say which of the given statements is not correct regarding it ________
    A)There is continuous day north of the Arctic Circle
    B)It shows the earth's orbital position on 21st June
    C)All parallels in the northern hemisphere have days equal to nights
    D)South of the equator the length of the day decreases with increasing latitude
    Answer: All parallels in the northern hemisphere have days equal to nights
  • Q. What is the circumference of the Earth?
    A)25,000 km
    B)13,000 km
    C)20,000 km
    D)40,000 km
    Answer: 40,000 km
  • Q. Through which one of the following groups of countries does the Equator pass?
    A)Brazil, Sudan and Malaysia
    B)Brazil, Zambia and Malaysia
    C)Colombia, Kenya and Indonesia
    D)Venezuela, Ethiopia and Indonesia
    Answer: Colombia, Kenya and Indonesia
  • Q. Green House Effect’ means ________
    A)Trapping of solar energy due to atmospheric carbon dioxide
    B)Pollution in houses in tropical regions
    C)Trapping of solar energy due to atmospheric oxygen
    D)Cultivation in green houses so as to check pollution
    Answer: Trapping of solar energy due to atmospheric carbon dioxide
  • Q. Which of the following Isohels are the isopleths of
    A)Rain
    B)Sunshine
    C)Flowering time
    D)Clouds
    Answer: Sunshine
  • Q. Light from the Sun reaches us in nearly
    A)6 min.
    B)8 min.
    C)2 min.
    D)4 min.
    Answer: 8 min.
  • Q. The tide at its maximum height is known as ________
    A)Spring tide
    B)Equinox
    C)Neap tide
    D)Tsunami
    Answer: Spring tide
  • Q. What is the interval between a high tide and low tide at a given place?
    A)15 hours 30 minutes
    B)12 hours
    C)12 hours 26 minutes
    D)24 hours
    Answer: 12 hours 26 minutes
  • Q. What is the correct sequence of the following in the context of the age of the earth since its origin? 1. Cenozoic 2. Mesozoic 3. Palaeozoic 4. Protozoic
    A)3, 4, 1, 2
    B)4, 3, 1, 2
    C)3, 4, 2, 1
    D)4, 3, 2, 1
    Answer: 4, 3, 2, 1
  • Q. The International Date Line makes slight deviation from 180° meridian so that it ________
    A)Does not divide a group of islands under the same administration
    B)Divides the land masses under the same administration
    C)Does not divide the Bering strait
    D)Divides the Pacific Ocean into two equal halves
    Answer: Does not divide a group of islands under the same administration
  • Q. The area of the Earth’s total surface is of the order of ________.
    A)400 million square kilometres
    B)510 million square kilometres
    C)450 million square kilometres
    D)350 million square kilometres
    Answer: 510 million square kilometres
  • Q. Equator is
    A)The girdle around the Saturn
    B)Line which connects north and south poles
    C)Imaginary line which rotates around the Earth in the centre of north and south poles
    D)Axis of the rotation of the Earth
    Answer: Imaginary line which rotates around the Earth in the centre of north and south poles

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