7th Class Science Winds, Storm and Cyclones Question Bank

done Winds, Storms and Cyclones Total Questions - 40

• question_answer1)
  Which of the following will rise the highest in the atmosphere?
  A)
   Air at \[{{10}^{\text{o}}}C\]                        done clear
  B)
   Air at \[{{40}^{\text{o}}}C\]        done clear
  C)
          Air at \[{{20}^{\text{o}}}C\]  done clear
  D)
          Air at \[-{{5}^{\text{o}}}C\] done clear
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• question_answer2)
  What is an anemometer?
  A)
   A device for measuring atmospheric pressure done clear
  B)
   A device for measuring wind speed done clear
  C)
   A device for measuring atmospheric temperature done clear
  D)
   A device for measuring humidity done clear
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• question_answer3)
  Which of the following is true of the 'eye' of a cyclone?
  A)
   It is an area of high pressure done clear
  B)
   It is an area of low pressure done clear
  C)
   It has lots of clouds and rains done clear
  D)
   It has high temperature done clear
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• question_answer4)
  Which of the following plays an important role in the early-warning systems for cyclones?
  A)
   Helicopters    done clear
  B)
          Submarines       done clear
  C)
          Satellites             done clear
  D)
          Stars done clear
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• question_answer5)
  Which of the following is the best thing to do during heavy lightning?
  A)
   Lying on the ground in an open place done clear
  B)
   Going into the nearest water body done clear
  C)
   Staying indoors away from metallic doors or windows done clear
  D)
   Standing under a tall tree done clear
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• question_answer6)
  During the formation of rain, what happens when water vapor changes to rain drops?
  A)
   Heat is absorbed. done clear
  B)
   Heat is released. done clear
  C)
   Heat is first absorbed and then released. done clear
  D)
   There is no exchange of heat. done clear
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• question_answer7)
  How are sea and land breezes caused?
  A)
   Through convection currents done clear
  B)
   Through cyclones done clear
  C)
   Through rains done clear
  D)
   Through conduction done clear
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• question_answer8)
  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. done clear
  B)
   It is hotter in and around the equator. done clear
  C)
   It is hotter in and around the north and the south. done clear
  D)
   Wind does not flow from the east or the west. done clear
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• question_answer9)
  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 done clear
  B)
   Due to the shape of the earth done clear
  C)
   Due to the rotation of the earth done clear
  D)
   Due to the revolution of the earth done clear
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• question_answer10)
  What is created temporarily behind when a vehicle moves very fast?
  A)
   Low pressure done clear
  B)
   High pressure done clear
  C)
   High temperature done clear
  D)
   Cyclone done clear
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• question_answer11)
  From where do the monsoon winds come to India?
  A)
   Northeast                          done clear
  B)
   Northwest         done clear
  C)
          Southeast          done clear
  D)
          Southwest done clear
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• question_answer12)
  Upon heating, gases become lighter. Why?
  A)
   Increase in molecular spaces done clear
  B)
   Decrease in molecular spaces done clear
  C)
   Breaking of molecules done clear
  D)
   Formation of new molecules done clear
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• question_answer13)
  What is the best thing to do when strong winds blow over a hut having a weak thatched roof?
  A)
   Open the doors and windows done clear
  B)
   Close all the doors and windows done clear
  C)
   Make holes in the roof done clear
  D)
   Burn wood inside done clear
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• question_answer14)
  Which of these countries is most likely to be affected by cyclones?
  A)
   Nepal                                   done clear
  B)
   Indonesia           done clear
  C)
          Hungary              done clear
  D)
          Mongolia done clear
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• question_answer15)
  Which of the following has the highest pressure?
  A)
   Soft drink in a straw done clear
  B)
   The air done clear
  C)
   Soft drink in a glass done clear
  D)
   A closed bottle done clear
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• question_answer16)
  Which of the following is NOT affected by air pressure?
  A)
   Riding a bicycle against the wind done clear
  B)
   Flying a kite done clear
  C)
   A ball falling to the ground done clear
  D)
   Drinking a soft drink through a straw done clear
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• question_answer17)
  Which of the following does NOT increase the humidity of the surrounding air?
  A)
   A puddle of water evaporating in a few days done clear
  B)
   Blowing hair dry after washing it done clear
  C)
   Formation of dew drops on leaves done clear
  D)
   Drying of clothes under the sun done clear
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• question_answer18)
  "Water vapor in the atmosphere condenses to form clouds?: From this statement, what can be concluded?
  A)
   The temperature decreases as we go higher. done clear
  B)
   The temperature increases as we go higher. done clear
  C)
   Pressure increases as we go higher. done clear
  D)
   Pressure decreases as we go higher. done clear
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• question_answer19)
  Which of the following shows that air exerts pressure?
  A)
   The way a straw works done clear
  B)
   The way an ink filler works done clear
  C)
   Falling of rain drops done clear
  D)
   Both (A) and (B) done clear
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• question_answer20)
  Warm air is lighter than cold air. Why?
  A)
   Warm air has more pressure. done clear
  B)
   Molecules are closer in warm air. done clear
  C)
   Warm air expands and becomes lighter. done clear
  D)
   Both (A) and (B) done clear
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• question_answer21)
  Which of the following is most prevalent during the day time?
  A)
   Sea breeze        done clear
  B)
   Land breeze      done clear
  C)
          Earthquake    done clear
  D)
          Both (A) and (B) done clear
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• question_answer22)
  Which of the following is NOT affected by a difference in air pressure?=

  P-Hurricane

  Q - Tornado

  R - Volcano

  A)
   Only P and Q     done clear
  B)
   Only Q and R done clear
  C)
          Only Q                 done clear
  D)
          Only R done clear
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• question_answer23)
  The cold winds from the Polar Regions blow towards the equator, but they also move partially towards the west. Which of the following causes this?
  A)
   Revolution of the earth. done clear
  B)
   Rotation of the earth. done clear
  C)
   Tilt of the earth's axis. done clear
  D)
   Both (A) and (B). done clear
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• question_answer24)
  On what principle does a syringe work?
  A)
   Variance in pressure done clear
  B)
   Variance in temperature done clear
  C)
   Variance in humidity done clear
  D)
   Variance in mass done clear
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• question_answer25)
  A lighted candle is kept on a table and a glass jar is inverted on it. After some time, the candle gets extinguished. Why?
  A)
   The candle melts done clear
  B)
   The wind present inside blew the candle done clear
  C)
   No oxygen is available done clear
  D)
   All of the above done clear
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• question_answer26)
  Which of the following is correct of the composition of air?
  A)
   It changes from place to place. done clear
  B)
   It is always the same. done clear
  C)
   It is fixed at all heights. done clear
  D)
   It is always hot. done clear
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• question_answer27)
  What makes rain fall as drops?
  A)
   The air on the earth done clear
  B)
   The dust particles in the air done clear
  C)
   The oxygen in the air done clear
  D)
   The water vapour in the dry air done clear
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• question_answer28)
  When water vapour condenses around the dust particles in air, what does it form?
  A)
   Mist                      done clear
  B)
   Dew      done clear
  C)
          Frost     done clear
  D)
          Snow done clear
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• question_answer29)
  In which of the following areas does the climate remain almost the same throughout the year?
  A)
   Desert area done clear
  B)
   Coastal area done clear
  C)
   Mountainous area done clear
  D)
   All of the above done clear
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• question_answer30)
  On what factors does the rate of evaporation depend?
  A)
   Temperature of the liquid done clear
  B)
   Area of the liquid exposed to heat done clear
  C)
   Wind blowing over the liquid done clear
  D)
   All of the above done clear
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• question_answer31)
  What causes wind currents across the globe?
  A)
   The rotation of the earth done clear
  B)
   Change in season done clear
  C)
   Uneven heating between the equator and poles done clear
  D)
   Gravitational pull of the sun done clear
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• question_answer32)
  In which of the following examples is compressed air NOT used?
  A)
   Shooting an air gun done clear
  B)
   Tyres of a vehicle done clear
  C)
   Floating of a heavy ship done clear
  D)
   Use of a syringe done clear
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• question_answer33)
  In which of the following cases does evaporation take place?
  A)
   Conversion of vapours into liquid state done clear
  B)
   Liquification of compressed air done clear
  C)
   Drying of wet clothes done clear
  D)
   Conversion of solid to gas directly done clear
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• question_answer34)
  What causes convection currents in air?
  A)
   The revolution of the earth around the sun done clear
  B)
   The rotation of the earth around itself done clear
  C)
   The heat on the surface of the earth done clear
  D)
   The uneven shape of the earth done clear
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• question_answer35)
  Observe the figure given below. Which of the given statements best explains why the cardboard does NOT fall?
  A)
   The wet cardboard sticks to the glass. done clear
  B)
   Atmospheric pressure acts equally on the glass and on the cardboard. done clear
  C)
   The force of gravity pulling the cardboard is negligible. done clear
  D)
   Air exerts pressure on the cardboard in the upward direction. done clear
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• question_answer36)
  Identify the correct statement among the following.
  A)
   Wind movements are caused by uneven heating of air on the earth. done clear
  B)
   The movement of air from land to sea is called sea breeze. done clear
  C)
   When the air moves from sea to land it is called land breeze. done clear
  D)
   When air moves from low pressure to high pressure it is called wind. done clear
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• question_answer37)
  What causes tropical cyclone?
  A)
   The strong air pressure done clear
  B)
   The energy of the ocean waves done clear
  C)
   The energy of the wind done clear
  D)
   The sun's energy done clear
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• question_answer38)
  Choose the correct statement from the following.
  A)
   High speed winds are accompanied by reduced air pressure. done clear
  B)
   High speed winds are accompanied by increased air pressure. done clear
  C)
   Change in pressure does not affect the wind velocity. done clear
  D)
   Humidity can change the velocity and direction of wind. done clear
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• question_answer39)
  Which of the following is NOT correct of thunderstorms?
  A)
   They develop in hot, humid tropical areas like India very frequently. done clear
  B)
   They develop in cold, humid areas like polar region very frequently. done clear
  C)
   The swift movement of falling water droplets along with rising air create lightning and sound. done clear
  D)
   Upward rising winds produced by rising temperatures carry water droplets upwards. done clear
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• question_answer40)
  How is wind useful to mankind?
  A)
   It helps to maintain average temperature on the earth done clear
  B)
   It disperses fresh air from one place to another done clear
  C)
   It helps in the formation of clouds done clear
  D)
   All of the above done clear
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