Advertisements
Advertisements
Question
What effect does temperature have on air pressure?
Advertisements
Solution
- Temperature and air pressure are closely related.
- Whenever the temperature is high, the air pressure is low.
- As the temperature rises, the air gets heated, expands, and becomes lighter.
- This lighter air in the vicinity of the earth's surface starts moving upwards in the sky. As a result, the air pressure in such areas decreases.
RELATED QUESTIONS
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
Write the numerical value of the atmospheric pressure on the earth surface in pascal.
Give reasons for the following:
Two holes are made in a sealed oil tin to take out oil from it.
Give two reasons for use of mercury as a barometric liquid.
Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.
Why does a fountain pen leak at high altitude?
The atmospheric pressure at earth's surface is P1 and inside mine is P2. They are related as :
At sea level, the atmospheric pressure is 1.04 x 105 Pa. Assuming g = 10 m s-2 and density of air to be uniform and equal to 1.3 kg m-3, find the height of the atmosphere.
What is the value of atmospheric pressure?
What does a falling barometer indicate?
