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1
Moving air is called ____________.
Breeze
Storm
Wind
Tornado
2
Upon heating gases become __________ because the molecules ________ .
Lighter, contract
Heavier, contract
Heavier, expand
Lighter, expand
3
Air pressure _________________ as you go up in the atmosphere.
Increases
Decreases
Does not change
None of these
4
What is the common name of a storm which is accompanied by lightning followed by a loud sound from the clouds ?
Thunderstorm
Lightining
Earthing
Cyclones
5
Which of the applications or examples shows that air exerts pressure?
We can suck up water with a straw.
We can see the apples falling from trees.
We can see the flow of the wind from tree leaves.
We can swim in the ocean.
6
Moving air can produce __________________
Shift in wind direction
Lift
High speed wind
High rainfall zone
7
Choose the correct alternative:
High speed winds are accompanied by increased air pressure
In summers, wind flow from land to oceans
In summers, wind flow from oceans to land
8
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
9
A storm is accompanied with thunder, lightning and also _____________ or hail.
Heavy rain
Snow fall
Dust storm
Earthquake
10
What do you mean by thunderstorms?
A storm with thunder and no lightning .
A storm typically with heavy sunlight
A storm with thunder and lightning .
A storm with heavy rain and no lightning .