Tuesday, 3 March 2015

FORM 4: 3.3 UNDERSTANDING GAS PRESSURE AND ATMOSPHERIC PRESSURE

THE MEANING OF GAS PRESSURE
Gas pressure is the force exerted on a surface by gas molecules per unit area of the surface.


INSTRUMENTS FOR MEASURING GAS PRESSURE






































THE MEANING OF ATMOSPHERIC PRESSURE
The atmospheric pressure is the pressure exerted by the atmosphere on the surface of the Earth as well as all objects on the Earth.


INSTRUMENTS FOR MEASURING GAS PRESSURE

























APPLICATIONS OF ATMOSPHERIC PRESSURE

































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