1 :
the action or process of conveying
. 2a : movement in a gas or liquid in which the warmer parts move up and the cooler parts move down convection currents. b : the transfer of heat by convection foods cooked by convection — compare conduction, radiation.
How do you explain convection to a child?
Convection is a way in which heat travels. It
occurs when heat is transferred by the movement of liquids or gases
. The other methods of heat transfer are conduction and radiation. Natural convection occurs when fluids are heated.
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 a simple definition of conduction?
Conduction is
the process by which heat energy is transmitted through collisions between neighboring atoms or molecules
. Conduction occurs more readily in solids and liquids, where the particles are closer to together, than in gases, where particles are further apart.
What is convection definition in science?
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 is the best definition of convection?
1 :
the action or process of conveying
. 2a : movement in a gas or liquid in which the warmer parts move up and the cooler parts move down convection currents. b : the transfer of heat by convection foods cooked by convection — compare conduction, radiation.
What are the applications of convection?
- Car engines are cooled by convection currents in the water pipes. …
- Land and sea breezes are caused due to convection currents.
- Rising air over the land are convection currents and are used by glider pilots to keep their gliders in the sky.
What are 3 facts about convection?
- The heat source and liquid are needed to form convection current therefore, heat transfer can be conducted.
- Convection occurs in the atmosphere. …
- Magma is considered as the fluid, while the core of the earth is called as the heat source.
- Convection is important since it can affect the weather.
How do you explain 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.
What are three types of convection?
- Natural convection.
- Forced convection.
What is the best definition of conduction?
1 :
the act of conducting or conveying
. 2a : transmission through or by means of a conductor also : the transfer of heat through matter by communication of kinetic energy from particle to particle with no net displacement of the particles — compare convection, radiation.
What is conduction definition and example?
The definition of conduction is
the movement of something such as heat or electricity through a medium or passage
. An example of conduction is using a metal rod to roast marshmallows on an open fire and feeling the heat rise through the rod from the fire to your hand. noun.
What is convection short answer?
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.
What is convection and why is it important?
Convection currents
play a role in the circulation of fluids
. Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. … Convection also plays a role in the movement of deep ocean waters and contributes to oceanic currents.
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.
How is convection used in everyday life?
Air-Conditioner
On a hot summer day, air-conditioners are used constantly. The
process
of cooling air in air-conditioners employs the very principle of convection. The air which is cold is released by the air-conditioners. Now, this cold air is denser than the warm air, and, hence, it sinks.
