Convection, process by which heat is transferred by movement of a heated fluid such as air or water. … Forced convection involves the transport of fluid by methods other than that resulting from variation of density with temperature. Movement of air by a fan or of water by a pump are examples of forced convection.
What are 4 examples of convection?
In this article, we are going to discuss the real-life examples of convection which are quite interesting.
- Breeze. The formation of sea and land breeze form the classic examples of convection. …
- Boiling Water. …
- Blood Circulation in Warm-Blooded Mammals. …
- Air-Conditioner. …
- Radiator. …
- Refrigerator. …
- Hot Air Popper. …
- Hot Air Balloon.
How do you explain convection?
Convection is the circular motion that happens when warmer air or liquid — which has faster moving molecules, making it less dense — rises, while the cooler air or liquid drops down. Convection is a major factor in weather.
What is convection definition and example?
Convection is the transfer of heat by circulating it through air or liquids. … A heat source at the bottom of the balloon heats the air molecules around the flame, and those molecules rise. Warmer air is less dense than cold air, so as the warm air rises the molecules spread out.
What is convection summary?
Summary. Convection is the transfer of thermal energy by particles moving through a fluid. Thermal energy is always transferred from an area with a higher temperature to an area with a lower temperature. Moving particles transfer thermal energy through a fluid by forming convection currents.
What is a good example of convection?
Everyday Examples of Convection
boiling water – When water boils, the heat passes from the burner into the pot, heating the water at the bottom. This hot water rises and cooler water moves down to replace it, causing a circular motion.
What are three types of convection?
Types of Convection
- Natural convection.
- Forced convection.
What are the three main sources of convection?
The primary sources of thermal energy for mantle convection are three: (1) internal heating due to the decay of the radioactive isotopes of uranium, thorium, and potassium; (2) the long-term secular cooling of the earth; and (3) heat from the core.
What is convection flow?
Convective transport (convective flow, bulk flow, convection) may refer to either heat or mass transfer. … In the context of membranes, convective flow refers to the transport of fluid (pure solvent or solution) across a porous membrane, which is driven by the applied pressure.
What is the goal of convection?
Convection: If the medium happen to be a fluid (things that can flow), then the medium particles themselves can carry thermal energy and deliver it across. There is a bulk flow of medium particles in this mode.
How is convection formed?
Convection currents form because a heated fluid expands, becoming less dense. The less-dense heated fluid rises away from the heat source. As it rises, it pulls cooler fluid down to replace it. This fluid in turn is heated, rises and pulls down more cool fluid.
What are two uses of convection?
The following are the uses of convection: Car engines are cooled by convection currents in the water pipes. Water is a very good substance to carry the unwanted heat away from the engine to the radiator. … Rising air over the land are convection currents and are used by glider pilots to keep their gliders in the sky.
What is convection in layman’s terms?
Convection is the movement of heat because of the movement of warm matter. For example, atmospheric circulation moves warm air to cool places, causing wind. … The movement of the clouds, the ocean currents and many types of heaters are examples of convection.
What is another word for convection?
In this page you can discover 13 synonyms, antonyms, idiomatic expressions, and related words for convection, like: oscillation, , convecting, evaporation, convective, upwelling, radiative, magnetic field, flux, ionosphere and boundary layer.
What are the two types of convection?
There are two types of convection: natural convection and forced convection.
Is a fireplace an example of convection?
Fireplaces utilize natural air convection in much the same way as an outdoor campfire does to transfer heat. Convection is one of the most common ways to transfer heat from one object to another, both in nature and in man-made heating appliances.
What is convection vs conduction?
In conduction, heat transfer takes place between objects by direct contact. In convection, the heat transfer takes within the fluid. … For example, heat transfer between air and water.
What are 2 examples of conduction?
If you leave a metal spoon propped up in a pot, it will become hot from the boiling water inside the pot. Chocolate candy in your hand will eventually melt as heat is conducted from your hand to the chocolate. When ironing a piece of clothing, the iron is hot and the heat is transferred to the clothing.
What is the example of convection current?
Convection currents are present in the air– A good example of convection current is the warm air that rises towards the ceiling in your house. The process happens as the warm air is said to be less dense than that of the colder air. Another good example of convection current is wind.
Where do we see convection?
Convection occurs on a large scale in atmospheres, oceans, planetary mantles, and it provides the mechanism of heat transfer for a large fraction of the outermost interiors of our sun and all stars. Fluid movement during convection may be invisibly slow, or it may be obvious and rapid, as in a hurricane.
What are the effects of convection?
Convection also plays a role in the movement of deep ocean waters and contributes to oceanic currents. Inside Earth, the convection of mantle material is thought to cause the movement of the overriding crustal plates, resulting in events such as earthquakes and volcanic eruptions.
What happens in convection?
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated. … As a result, the particles take up more volume.
What happens during convection?
The heat driving the convection current in the mantle comes from the extreme temperature in the earth’s core, and the heat from the mantle itself. … Also this point is where the fluid in the convection begins to heat up, before rising to point B where it cools.