EASY
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Anjali tried the two experiments shown in the pictures. Look at them carefully and then complete the sentence.
Question Image 
In the second experiment, the air in the balloon pushes or exerts pressure in directions. It holds the glass firmly and Anjali is able to lift it up.(Some/All)

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Important Questions on Winds, Storms and Cyclones

MEDIUM
Which is higher–the atmospheric pressure at Mumbai or the atmospheric pressure on top of Mt Everest? Give reasons.
 
EASY
The envelope of air is known as the________.
MEDIUM
Why do bicycle tubes burst when over-filled?
EASY
In which direction does air exert maximum pressure?
MEDIUM

List five uses of air pressure.  

MEDIUM
Give reasons: 
The wind blows because of air pressure.
EASY
Explain why a rubber sucker pressed on a smooth surface gets stuck to the surface.
 
EASY
We do not feel uneasy even under the enormous atmospheric pressure. Give a reason.
EASY
The pressure exerted by the air is known as?
EASY
The Earth is surrounded by a thick layer of air called the _____.
MEDIUM

We are able to drink liquids using a straw. Explain why.

HARD

Solve the ladder word puzzle with the help of clues given alongside.

                    A                      
                    1T       D             M
                    M                      
            2T     H O                      
                    S                      
        3W       R   P O                    
                    H                      
                    E                      
4E     A         A   R   G                  
                    I                      
          5H     R   C     E                
                    6P                      
                7T   R   A                  
                    E                      
                    S                      
        8S       T   S     E                
                    U                      
                    R                      
                    E                      

Clues

1. Heavily falling water along with rising warm air producing heavy rain, lightning, sound and strong wind. 12
2. Cyclones originating from China sea. 7
3. Tornado formed over the sea. 11
4. Place on the earth which receives more sunlight. 16
5. Tropical cyclones in the Gulf of Mexico, the Caribbean Sea and Western Pacific Ocean. 10
6. From where colder air moves down. 11
7. Storms that form very suddenly on the land. 7
8. The atmospheric layer where the ozone layer exists. 12

EASY
The instrument used to measure change in air pressure is        
EASY
Give reason for the following :
Two holes are made in a sealed oil tin to take out oil from it.
MEDIUM
Name the factors on which atmospheric pressure depends. Explain how does atmospheric pressure changes when we go to the mountains. 
EASY
How does the atmospheric pressure change with altitude?
MEDIUM
Give reason for the following :
A balloon collapses when air is removed from it.
EASY
Atmospheric pressure increases with: 
EASY
When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to