1.Convection currents do not take place in a vacuum. The reason for this is the majority of the heat loss or gain via convection.
2. convection can only take place in a gas or a liquid.
3. It is more effective in a liquid because there are more particulars that can be heated.
Kinetic energy: energy that is made use friction
Particles: a minute portion of matter.
Vibration: an instance of vibrating.
Dense: closely compacted in substance.
Convection current: a current in a fluid that results from convection.

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