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As the air rises in a convection cell, it eventually reaches the top of the troposphere, known as the tropopause. At the tropopause, the temperature stops decreasing with altitude, which inhibits further rising of the air. Additionally, the density of the air decreases with altitude, causing it to become less buoyant and preventing further upward movement.
What else can I help you with?
What are examples of convection?
in a pot on the stove, cold water sinks to the bottom and hot water circulates on the top of the pot. (The colder water needs to become hot, so it sinks to the bottom. That's why you see movement in the pot of water.)
Heated air molecules in a hot air balloon soon carry thermal energy to the top of the balloon this is an example of?
Convection. In this case, the heated air molecules rise due to their lower density, carrying thermal energy from the heat source at the bottom of the balloon to the cooler top part of the balloon.
Why does heat from the top of the bulb feels different from the heat on the side of the bulb?
The heat from the filament radiates in all directions inside the bulb (as there is no air for convection). Once the heat reaches the glass the heat is now transmitted by both radiation and convection.Hot air rises so the air on the side of the bulb is heated and it rises up, it is now replaced by cooler air which needs to be heated. So the air on the side of the bulb is colder than the air on top. If you hand is on top of the bulb it will be heated by the air raising from the side as well as the top.
What makes a thunderstorm include anvil?
A thunderstorm forms as the result of a mass of warm, moist air rising because it is more buoyant than the air around it. Eventually this mass of air reaches a layer (often the tropopause) that it cannot rise through. However, the air beneath is still rising, so the top of the air mass, and thus the top of the cloud, is forced to spread out.
What happens to the temperature of gases as they reach the top of the convection zone?
The temperature of gases in the convection zone increases as they rise towards the top. This is due to the process of convective heat transfer, where hotter gases move upwards and cooler gases move downwards, creating a cycle that leads to temperature increase towards the top of the convection zone.
What are some examples of convection?
Examples of convection include:hot air rising, cooling, and fallinga hot air balloonboiled water or boiling waterhot air popperan old fashioned radiator (creates a convection cell in a room by emitting warm air at the top and drawing in cool air at the bottom).steaming beverage
An example of convection?
Hot Air Rising And Cooler Air Falling Is One Example Of Convection Which That Example Is Called Convection Currents. Example Two An old-fashioned radiator creates a convection cell in a room by emitting warm air at the top and drawing in cool air at the bottom.
What are examples of convection?
in a pot on the stove, cold water sinks to the bottom and hot water circulates on the top of the pot. (The colder water needs to become hot, so it sinks to the bottom. That's why you see movement in the pot of water.)
Because of convection the warmest air in a room?
because convection causes the warm air to rise. This creates a cycle where the warm air moves to the top of the room.
What are convenction current and what do they cause?
Convection currents are caused by uneven heating of bodies of water/air, resulting in a current as hotter air/water rises, and cooler air/water sinks. For example on a stove-top, when boiling water, the water at the bottom will warm first, being closest to the fire. Rising to the top, it will cool and sink to the bottom, creating a current. That is why covering a pot is more efficient- when the hot water rises to the top due to a convection current, it cannot lose as much heat.
When hot and cold air meet the hot air rises to the top. Which process causes the hot air to rise?
Convection
How does a convection current enable a hawk or eagle to soar upward without flapping its wings?
A convection current is a mass of warm air moving upwards because it is less dense than the air around it. These currents are usually called "Thermals" and care capped at their top by a cumulus cloud. If a bird can find the rising column of air that is a thermal and circle round in it, the bird is carried aloft with the air, without the need to flap its wings.
Heated air molecules in a hot air balloon soon carry thermal energy to the top of the balloon. This is an example of?
Convection.
In winter the air just above the top bunk of a bunk bed is warmer than the air just above the bottom bunk because warm air rises what describes the method of heating that causes thi?
This phenomenon is due to convection, where warm air rises and cool air sinks. The heating method causing this is likely from a heater in the room, which warms the air near the ceiling first and creates a temperature gradient from top to bottom in the room.
Heated air molecules in a hot air balloon soon carry thermal energy to the top of the balloon this is an example of?
Convection. In this case, the heated air molecules rise due to their lower density, carrying thermal energy from the heat source at the bottom of the balloon to the cooler top part of the balloon.
Why cant convection currents form if they are heated from the top?
Convection currents form when a fluid is heated from the bottom, causing it to rise and create a circulating flow. If a fluid is heated from the top, there is no temperature difference to drive the circulation, preventing convection currents from forming. Heat needs to be applied at the bottom to induce the necessary buoyancy-driven flow for convection currents to occur.
How does a convection current happen in a boiling pot of water?
In a boiling pot of water, convection currents occur when the water at the bottom is heated and becomes less dense, causing it to rise to the top. As it reaches the top, it cools down and becomes denser, then it sinks back down to the bottom to be reheated. This circular motion of rising and sinking creates a convection current in the pot.
