What Is Convection In Geography

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The method of transferring heat by the movement of the particles of substance away from the source of heat is known as convection. It takes place only in liquids and gases. On heating the water the part of it near the flame gets heated up and expands due to which it becomes less dense and consequently rises up.

What is convection Class 7 Brainly?

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. Convection is a major factor in weather.

What is conduction in Brainly?

Brainly User. Answer: Conduction is the transfer of energy in the form of heat or electricity from one place to another of same object.

What is convection apex?

Convection. transfer of heat through a fluid or gas by a current. Energy. The ability to cause change or do work.

What is difference between convection and radiation?

Convection is the heat transfer by up and down motion of the fluid. Radiation occurs when heat travels through empty space.

What is a simple definition of conduction?

Definition of conduction

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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 meant by conduction convection and radiation?

Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission. Hope this helps!

What are the two types of convection?

There are two types of convection: natural convection and forced convection.

How does convection take place?

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. … The denser cold liquid or gas falls into the warm areas.

Is burning of wood a convection process?

Wood burning fires transfer heat in the same way as many modern heating appliances. … These include convection which is a transfer of heat through air currents.

How does convection occur in boiling water?

When boiling water the temperature of molecules within the water increases and they slowly begin to move at a rapid rate upwards. These molecules produce kinetic energy. The hot water molecules become less dense and they rise above the denser cooler molecules. This movement of molecules creates convection currents.

What are the 3 types of heat?

Heat can be transferred in three ways: by conduction by convection and by radiation.

• Conduction is the transfer of energy from one molecule to another by direct contact. …
• Convection is the movement of heat by a fluid such as water or air. …
• Radiation is the transfer of heat by electromagnetic waves.

What are the 4 steps in convection currents that move the tectonic plates?

In addition convection currents occurs because the very hot material at the deepest part of the mantle rises then cools sinking again and heating rising and repeating the cycle over and over again. Thus all the motion caused by these actions causes plate tectonics to move.

What are three examples of radiation?

Examples Of Radiation

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