Atmosphere Model Questions

9th Standard

    Reg.No. :
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Social Science

Time : 01:00:00 Hrs
Total Marks : 50
    7 x 1 = 7
  1. ______ is the most important gas for the survival of living organisms.

    (a)

    Helium

    (b)

    carbon-di-oxide

    (c)

    oxygen

    (d)

    oxygen

  2. _______  reflects radio waves

    (a)

    Exosphere

    (b)

    Ionosphere

    (c)

    Mesosphere

    (d)

    Stratosphere

  3. The ________  is the chief energy source of the Earth.

    (a)

    Sun

    (b)

    Moon

    (c)

    Stars

    (d)

    Clouds.

  4. All types of clouds are found in the _______ 

    (a)

    Troposphere

    (b)

    Ionosphere

    (c)

    Mesosphere

    (d)

    Exosphere

  5. _____  is called the eye of the storm.

    (a)

    Pressure

    (b)

    wind

    (c)

    cyclones

    (d)

    snow.

  6. This gas helps in protecting the earth from radiation.

    (a)

    Hydrogen

    (b)

    Nitrogen

    (c)

    Ozone

    (d)

    CO2

  7. This is the earth's magnetic belt________

    (a)

    Thermosphere

    (b)

    Stratosphere

    (c)

    Mesosphere

    (d)

    Magnetosphere

  8. 6 x 1 = 6
  9. Meteorology

  10. (1)

    0.93%

  11. Climatology

  12. (2)

    study of climate

  13. Wind Vane

  14. (3)

    rain shadow region

  15. Leeward side

  16. (4)

    Coil of a snake

  17. Argon

  18. (5)

    direction of wind

  19. Cyclone

  20. (6)

    study of weather

    4 x 2 = 8
  21. Weather and climate

  22. Land breeze and sea breeze

  23. Tropical cyclone and Temperate cyclones.

  24. Isobar and Isotherm.

  25. 4 x 1 = 4
  26. The equatorial low pressure belt is an area of calm.

  27. Fog is dangerous for traffic.

  28. Polar Easterlies are cold and dry. Why it is so?

  29. The sub-tropical high pressure are called "horse latitudes". Why?

  30. 6 x 2 = 12
  31. Define atmosphere

  32. What is insulation?

  33. Polar Easterlies are cold and dry. Why it is so?

  34. How are clouds formed?

  35. How are Cyclones classified?

  36. What are Auroras?

  37. 1 x 3 = 3
  38. Cuddalore and Nagapattinam are always affected by cyclones. Why?

  39. 2 x 5 = 10
  40. Write a paragraph about the structure of the atmosphere.

  41. How are clouds classified? Explain them.

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