Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth. … Along with the turning of the Earth, this movement of air creates
winds
.
What happens with convection in the atmosphere?
Convection. Convection is the transfer of heat energy in a fluid. …
As it rises, the bubble cools with the heat contained in the bubble moving into the atmosphere
. As the hot air mass rises, the air is replaced by the surrounding cooler, more dense air, what we feel as wind.
What does atmospheric convection create?
The warmer air expands, becoming less dense than the surrounding air mass, and creating
a thermal low
. The mass of lighter air rises, and as it does, it cools due to its expansion at lower high-altitude pressures. It stops rising when it has cooled to the same temperature as the surrounding air.
What can result from the convection cycle?
Convection is a major factor in weather. … That current can result
in wind, clouds, or other weather
. Convection currents within the earth move layers of magma, and convection in the ocean creates currents.
What is an example of convection in the atmosphere?
Examples of Convection Related to Air Movement
hot air balloon
– A heater inside a hot air balloon heats the air, causing the air to move upward. This causes the balloon to rise because the hot air gets trapped inside. … Cool air takes its place, causing the balloon to lower.
What are three examples of convection in the environment?
- Breeze. The formation of sea and land breeze form the classic examples of convection. …
- Boiling Water. Convection comes into play while boiling water. …
- Blood Circulation in Warm-Blooded Mammals. …
- Air-Conditioner. …
- Radiator. …
- Refrigerator. …
- Hot Air Popper. …
- Hot Air Balloon.
Why is convection important for climate?
Besides creating the above-mentioned weather events, convection serves another purpose
— it removes excess heat from the earth’s surface
. Without it, it has been calculated that the average surface air temperature on earth would be somewhere around 125° F rather than the current liveable 59° F.
How does convection affect climate?
How does convection affect the weather? Convection within the atmosphere can often be observed in our weather. …
Stronger convection can result in much larger clouds developing as the air rises higher before it is cooled
, sometimes producing Cumulonimbus clouds and even thunderstorms.
How does radiation affect the atmosphere?
Radiation from the warmed upper atmosphere, along with a small amount from the Earth’s surface,
radiates out to space
. Most of the emitted longwave radiation warms the lower atmosphere, which in turn warms our planet’s surface.
How does convection play a major role in the atmosphere?
Convection in the atmosphere plays a vital role in two further mechanisms – quite apart from the emission of longwave radiation – whereby
energy is transferred from the Earth’s surface to the atmosphere
.
What is the process of convection currents?
Convection currents are the
result of differential heating
. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.
What are the causes and effects of convection currents?
convection currents occur when
a heated fluid expands, becoming less dense, and rises
. The fluid then cools and contracts, becoming more dense, and sinks.
How does convection current start?
Convection currents form because
a heated fluid expands
, becoming less dense. The less-dense heated fluid rises away from the heat source. … For instance, a hot radiator heats the air immediately around it. The air rises toward the ceiling, pulling cooler air down from the ceiling into the radiator to be heated.
What causes weather convection?
Convection – When
warm, moist air near the surface rises to be above the heavier cool, dry air
this is a form of heat transfer or convection. The rising motion typically cools the air. As the air cools, it reaches the dewpoint and all of the moisture in the air condenses– forming clouds.
What are 4 examples of radiation?
- ultraviolet light from the sun.
- heat from a stove burner.
- visible light from a candle.
- x-rays from an x-ray machine.
- alpha particles emitted from the radioactive decay of uranium.
- sound waves from your stereo.
- microwaves from a microwave oven.
- electromagnetic radiation from your cell phone.
What are three types of convection?
- Natural convection.
- Forced convection.
