because it does.
This is called convection. As the air near the surface warms, it becomes less dense and starts to rise. This rising warm air can lead to the formation of clouds and potentially result in precipitation.
Air rises at the equator and then flows northward. At about 30 degrees north latitude, the air sinks. When it reaches the surface, it flows south, back toward the equator. At the equator, the air rises again and the cycle starts all over.
convection currents r a cycle of heat in the mantle. the energy is produced by the heat in the core. the heat rises it becomes cooler and has a greater density. when the desity starts to decrease, it gets hotter and goes round and round in the cycle for many years. but, when the heat is on the top and it rises, the mantle can open up and cause sea floor spreading to occur.
Heat moves within a system through conduction, convection, and radiation. Conduction is the transfer of heat through direct contact between particles, while convection is the transfer of heat through the movement of fluids. Radiation is the transfer of heat through electromagnetic waves.
In the troposphere and stratosphere, gases maintain an approximately uniform composition due to mixing processes like convection in the troposphere and slow diffusion in the stratosphere. The concentration of gases starts to vary noticeably in the mesosphere and thermosphere due to decreasing density and interactions with solar radiation.
I don't think so - I don't think any convection is involved. I think boiling uses all three though - heat is conducted, this radiates out and heats the water which when heated starts a convection current.
When air loses its heat it actually becomes more dense and sinks which starts a convection current
A convection current is a cycle. The way the cycle works is when the liquid is heated the particles become less dense as it rises to the top and then it becomes more dense so it comes back down again. Then the process starts again.
ATOM
cooking and the water starts to boil.
THE ENGERGY is Kinetical energy
Because the steam is rising to the top and putting pressure to the lid as the steam tries to escape.
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convection means transmission of heat in liquid. consider an example that when u have more tension at that time ur temperament become hot it starts flowingn in our red blood corpuscles (water) so it become hard hence dense.
Hot air from a radiator reaches the other side of a room by convection current. Convection current is when hot water/ air rises, hot water/ air cools, cool water/ air sinks, cool water/ air warms and then the cycle starts over.