Difference between revisions of "Gas Pressure"
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===Meaning=== | ===Meaning=== | ||
'''Gas pressure''' is the [[pressure]] on an [[object]] caused by a [[gas]]. | '''Gas pressure''' is the [[pressure]] on an [[object]] caused by a [[gas]]. | ||
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| − | |[[File:GasPressure3.png|center| | + | |[[File:GasPressure3.png|center|200px]] |
| − | |[[File:GasPressure2.png|center| | + | |[[File:GasPressure2.png|center|200px]] |
| + | |[[File:GasPressure4.png|center|200px]] | ||
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| style="height:20px; width:200px; text-align:center;" |Increasing the [[temperature]] of the [[gas]] which makes the [[particle]]s move faster. This causes the particles to hit the walls of the container more often and with a greater [[force]]. | | style="height:20px; width:200px; text-align:center;" |Increasing the [[temperature]] of the [[gas]] which makes the [[particle]]s move faster. This causes the particles to hit the walls of the container more often and with a greater [[force]]. | ||
| style="height:20px; width:200px; text-align:center;" |Increasing the number of [[particle]]s in the container. | | style="height:20px; width:200px; text-align:center;" |Increasing the number of [[particle]]s in the container. | ||
| + | | style="height:20px; width:200px; text-align:center;" |Decreasing the [[Volume (Space)|volume]] of the container. That additional [[pressure]] caused by the [[force]] causes the [[gas]] to be [[compression|compressed]]. The [[force]] does [[Work Done|work]] on the [[gas]] increasing its [[temperature]]. | ||
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Revision as of 14:26, 6 March 2019
Contents
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.
 |
| 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:
 |
 |
| 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. |
Key Stage 4
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.
- The pressure from a gas always acts at right angles to the surface.
- Each time a particle in the gas hits an object or the walls it changes momentum which causes a force to be applied to the surface.
- The more particles that hit the surface, 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.
- The frequency and speed with which the particles collide with the surface determines the pressure on that surface.
|
| 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 three ways:
|
|
 |
| 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. | Decreasing the volume of the container. That additional pressure caused by the force causes the gas to be compressed. The force does work on the gas increasing its temperature. |