Class 8    Geography    Example [GEO-8.9]

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Q 1. The internal movements that affect the surface of the earth mostly take place in the upper portion of the ----------.
  • Core
  • Crust
  • Sial
  • Mantle
Q2. Which of the following wave(s) of earthquake can travel through all the layers of the interior of the earth ?
  • secondary
  • magnetic
  • primary
  • sound
Q3. The slow earth movements affect vast areas, these movements take place in a ---------- or ---------- directions.
  • upward, downward
  • horizontal, vertical
  • concave, convex
  • circular, straight
Q4. As energy moves through the interior of the earth, soft rocks are subjected to ----------.
  • compression
  • expand
  • remain as is
  • crack
Q5. What is the density of materials in the mantle layer ?
  • 2 to 3 g/cm3
  • 6 to 7.5 g/cm3
  • 6 to 8 g/cm3
  • 3 to 5.5 g/cm3
Q6. State True or False: "The temperature rises towards the core."
  • TRUE
  • Blank
  • Blank
Q7. Earthquakes, ----------, forming of mountains and ---------- are the effects of earth movements.

     (a)  sound waves     (b)  magnetic fields     (c)  volcanic eruptions     (d)  continents
  • a, b
  • b, c, d
  • c, d
  • a, c
Q8. In hard rock layers, the compression caused by the converging energy waves can also lead to ----------.
  • deform
  • faulting
  • boudinage
  • stress
Q9. A tremendous amount of energy is given out by the ---------- elements in the mantle.
  • density
  • electron
  • radioactive
  • irradiate
Q10. When a portion of the crust between two parallel faults is raised up, it appears as a block, which is called as ----------.
  • block mountain
  • fold mountains
  • dome mountains
  • volcanic mountains
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