Leaves of trees, banner or flags flutter when wind is blowing. Why?
  • Air occupies space
  • Air is a mixture of gases
  • Air exerts pressure
  • Air is colourless
When we blow over a paper strip it goes upward as shown in the figure given below. why?
  • Blowing over the paper reduces the air pressure above the strip
  • Blowing over the paper increases the air pressure above the strip
  • None of these is a correct reason
  • The strip will not go upward at all
Which of the following is safest way to protect yourself from lightning?
  • Run to an open field
  • Open an umbrella for cover
  • Take shelter under a tree
  • Squat low on ground
Which of the following places is most likely to be affected by a cyclone?
  • Mumbai
  • Puri
  • Goa
  • Porbandar
A fire alarm usually detects smoke in case of fire. Where should such an alarm be placed in a room?
  • Near the door
  • On the floor
  • On any wall
  • On the ceiling
The winds from oceans carry water and bring rain. These winds are called
  • typhoon
  • monsoon
  • cyclone
  • none of these
What is a cyclone?
  • Winds from the oceans carrying water
  • Very low pressure system with very high speed winds revolving around it
  • Dark funnel shaped cloud that reaches from the sky to the ground
  • None of these
Pick the odd one out
  • Cyclone
  • Hurricane
  • Monsoon
  • Typhoon
A cyclone warning can be issued
  • 48 hours in advance
  • 12 hours in advance
  • 6 hours in advance
  • 24 hours in advance
Air around us exerts pressure.
  • true
  • false
Air contracts on heating and expands on cooling.
  • True
  • False
Winds carrying water vapours bring rains.
  • True
  • False
Tornadoes are very frequent in our country.
  • True
  • False
Cyclones are beneficial to the people living in coastal areas
  • True
  • False
What type of breeze occurs during the day?
  • Land Breeze
  • Sea Breeze
Where can convection happen?
  • In oceans
  • In a pot of water
  • In the atmosphere
  • All of the above
There is high pressure on land and low pressure over water...
  • During the day
  • At night
  • At midday
  • Never
Wind always blows from areas of ______ towards areas of _____ .
  • low pressure, high pressure
  • high pressure, low pressure
  • cold, warm
  • hot, hotter
The wind speed is measured by
  • Wind vane
  • Barometer
  • Anemometer
  • Hygrometer
The central calm area of a cyclone is called
  • Core
  • Eye
  • Midpoint
  • None of these
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