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Difference between revisions of "Gas Pressure"

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===About Gas Pressure===
 
===About Gas Pressure===
 
: '''Pressure in gases''' is caused by particles [[Collide|colliding]] with the [[object]] or walls of the container.
 
: '''Pressure in gases''' is caused by particles [[Collide|colliding]] with the [[object]] or walls of the container.
 +
: Each time a [[particle]] in the [[gas]] hits an [[object]] or the walls it provides a [[force]].
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: The more [[particle]]s that hit the [[object]] or walls, the bigger the overall [[force]] it will experience.
 +
: The faster the [[particle]]s hit the [[object]] or walls, the bigger the [[force]] that each [[particle]] [[collide]]s with.
 +
 
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Revision as of 13:08, 22 September 2018

Key Stage 3

Meaning

Gas pressure is the pressure on an object caused by a gas.

About Gas Pressure

Pressure in gases is caused by particles colliding with the object or walls of the container.
Each time a particle in the gas hits an object or the walls it provides a force.
The more particles that hit the object or walls, the bigger the overall force it will experience.
The faster the particles hit the object or walls, the bigger the force that each particle collides with.
GasPressure1.png
The particle model of a gas showing the particles as red balls and their speed and direction shown by the arrows. The longer the arrows the faster they are moving.
The gas pressure can be increased in two ways:
GasPressure3.png
GasPressure2.png
Increasing the temperature of the gas which makes the particles move faster. This causes the particles to hit the walls of the container more often and with a greater force. Increasing the number of particles in the container.