Rainbow 🌈 mind map Atmospheric pressure
Atmosphere: The envelop of air up to a height of about 200 km around the earth is called Atmosphere.
Definition: The thrust on unit area of the earth surface due to the column of air.
Value: At the sea level, 1 atm =0.76 m of mercury column = 1.013 x 10⁵ Pa
Factor: Atmospheric pressure decreases with increasing attitude.
Instrument to measure : Barometer
Some examples
- A syringe gets filled with the liquid due to atmospheric pressure
- Ink gets filled into a fountain pen due to atmospheric pressure
On human body: The blood in veins of our body also exerts a pressure which is slightly more than Atmospheric pressure. This blood pressure makes the effect of Atmospheric pressure ineffective.
1The envelop of air up to a height of about 200 km around the earth .
Explain:- The envelop of air up to a height of about 200 km around the earth.
2. The thrust on a unit area of the earth surface due to column of air above it.
Explain:- The thrust on a unit area of the earth surface due to column of air above it is called Atmospheric pressure.
3. 1 atm = _____Pa
Explain:- 1 atm = 1.013 x 10⁵ Pa
4. Atmospheric pressure ________ with increase of altitude
- A) increases
Explain:-Atmospheric pressure decreases with increase of altitude
5. Device used to measure atmospheric pressure
Explain:- Barometer is used to measure atmospheric pressure
6. A dropper to fill ink works because of which of the following?
Explain: A dropper to fill ink works because of air pressure
7. Name the substance present in our body which balances atmospheric pressure-
Explain:- Blood of our body exerts pressure which balances atmospheric pressure .
