Olympiad – Class VII – Science - Che - Winds, Storms and Cyclones

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Question - 1

Which of the following will rise the highes in the atmosphere?

  • A Air at 10 °C
  • B Air at 40 °C
  • C Air at 20 °C
  • D Air at -5 °C

Question - 2

What is an anemometer?

  • A A device for measuring atmospheric pressure
  • B A device for measuring wind speed
  • C A device for measuring atmospheric temperature
  • D A device for measuring humidity

Question - 3

Which of the following is true of the 'eye' of a cyclone

  • A It is an area of high pressure
  • B It is an area of low pressure
  • C It has lots of clouds and rains
  • D It has high temperature

Question - 4

Which of the following plays an important role in the early-warning systems for Cyclones?

  • A Helicopters
  • B Submarines
  • C Satellites
  • D Stars

Question - 5

Which of the following is the best thing to do during heavy lightning?

  • A Lying on the ground in an open place
  • B Going into the nearest water b
  • C Staying indoors away from metallic doors or windows
  • D Standing under a tall tree

Question - 6

During the formation of rain, what happens when water vapour changes to rain drop?

  • A Heat is absorbed
  • B Heat is released.
  • C Heat is first absorbed and then released
  • D There is no exchange of heat

Question - 7

How are sea and land breezes caused?

  • A Through convection currents
  • B Through cyclones
  • C Through rains
  • D Through conduction

Question - 8

On the earth, the winds from the north and the south blow towards the equator. What can we understand from this?

  • A Earth is round or spherical in shape
  • B It is hotter in and around the equator
  • C It is hotter in and around the north and the south.
  • D Wind does not flow from the east or the west

Question - 9

The winds on the earth do not flow in the exact "north to south" or "south to north" directions. Why?

  • A Due to the seasons of the earth
  • B Due to the shape of the earth
  • C Due to the rotation of the earth
  • D Due to the revolution of the earth

Question - 10

What is created temporarily behind when a vehicle moves very fast?

  • A Low pressure
  • B High pressure
  • C High temperature
  • D Cyclone