Difference between revisions of "Convection"
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===About Convection=== | ===About Convection=== | ||
: [[Convection]] happens in [[fluid]]s ([[liquid]]s or [[gas]]es) because [[particle]]s can move past one another. | : [[Convection]] happens in [[fluid]]s ([[liquid]]s or [[gas]]es) because [[particle]]s can move past one another. | ||
| − | : When a [[fluid]] is [[heating|heated]] [[particle]]s move more quickly and spread further apart. This makes | + | : When a [[fluid]] is [[heating|heated]] [[particle]]s move more quickly and spread further apart. This makes the [[fluid]] less [[density|dense]]. The less [[density|dense]] [[fluid]] rises. After the [[fluid]] has moved away from the heater it cools down, the [[particle]]s move more slowly coming closer together. This makes the [[fluid]] more [[density|dense]] so it sinks back towards the heater. |
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| + | {| class="wikitable" | ||
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| + | |[[File:Convection.gif|center|]] | ||
| + | |} | ||
Revision as of 17:05, 10 October 2018
Key Stage 3
Meaning
Convection is a process where thermal energy is transferred in a fluid due to particles moving from hotter regions to cooler regions.
About Convection
- Convection happens in fluids (liquids or gases) because particles can move past one another.
- When a fluid is heated particles move more quickly and spread further apart. This makes the fluid less dense. The less dense fluid rises. After the fluid has moved away from the heater it cools down, the particles move more slowly coming closer together. This makes the fluid more dense so it sinks back towards the heater.
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