Atmospheric Pressure

Author:Lakhmir Singh & Manjit Kaur
8th CBSE
IMPORTANT

Important Questions on Atmospheric Pressure

EASY
IMPORTANT

A drinking straw works on the pressure exerted by the liquid filled in a soft drink bottle in which it is placed. 

MEDIUM
IMPORTANT

A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad (Ignore the frictional force due to air resistance). 

EASY
IMPORTANT

The atmospheric pressure is usually measured in the unit of 

EASY
IMPORTANT

The magnitude of atmospheric pressure is equal to the pressure exerted by a _____.

EASY
IMPORTANT

The magnitude of force is expressed in the unit of force called:

EASY
IMPORTANT

Which of following does not work on the existence of atmospheric pressure?

EASY
IMPORTANT

Which of the following represents correct values for the normal atmospheric pressure?
A. 101.3 kPa
B. 76 mm of mercury
C. 101.3 Pa
D. 76 cm of mercury

EASY
IMPORTANT

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 

EASY
IMPORTANT

Atmospheric pressure _____ (increases/ decreases) with increasing height.

EASY
IMPORTANT

A drinking straw works on the existence of _____ pressure. 
 

EASY
IMPORTANT

To draw water from a well, we have to _____ at the rope.

MEDIUM
IMPORTANT

What is common in the working of the devices such as a drinking straw, a syringe, a dropper and a rubber sucker?

EASY
IMPORTANT

Which of the following change appreciably when a batsman hits a moving cricket ball?
A. Shape B. Direction C. Size D. Speed.

MEDIUM
IMPORTANT

Explain why atmospheric pressure decreases as we go higher up above the earth’s surface.

MEDIUM
IMPORTANT

Why are our bodies not crushed by the large pressure exerted by the atmosphere?

MEDIUM
IMPORTANT

What is meant by atmospheric pressure? What is the cause of atmospheric pressure.

MEDIUM
IMPORTANT

Describe one activity to show the existence of atmospheric pressure.

MEDIUM
IMPORTANT

Why do mountaineers usually suffer from nose-bleeding at high altitudes?

EASY
IMPORTANT

What is a rubber sucker? How does it work? State any one use of a rubber sucker.

EASY
IMPORTANT

Name the substance whose weight produces atmospheric pressure.