Conduction & Convection Quiz (Theory)

These both  color and shiny surfaces are bad so they will emit   radiation or they will cause less loss.

Volume =   density 

             = 680 /

             =   cm^3                                      ( final answer ) 

Wood is a   conductor of heat.

  vibrate and   with neighbours . They transfer .

oil .
Convection established.

when the free electrons energy they start to  move   and faster.

As they the heat energy is so these metal also start vibrating

The wood is a conductor of heat so the ( handle of the pan ) will not be   up.

As the liquid gets ,its   become dense and it starts   and the cold water .

  at which all of the liquid is converted to becomes .

Energy = specific heat capacity *  

             =   * 2 * ( 260 – 20 ) 

             =  680 * * ( 240 ) 

 Thermal energy = ^ 5 J                        ( final answer )

The waves are absorbed by the food and the food gets up.

Air is a conductor.

The air starts to because the hot air is dense as compared to the cool air.

Both and   require a   to transfer heat and they can not transfer   in .

During the day : White is a   and a good   of heat.This means that less heat is  ,as less
During the night: White colour is a poor   so less   will occur at night

There is more difference between ( the outside and the bedroom ) as compared to the main .

Thermal energy =   J / ( hour ) 

Energy =  time 

            = 300 x

            =   x 10 ^ 6 J                                    ( final answer )

The cold air is more   than the air . The hot air has  density so it   to the top.

  and are not involved because they are not involved as a   to transfer energy and they can not transfer    in

Conduction occurs or vibrate .
Electrons move to other  

This process by which is transferred is known as .
( In liquid )  the transfer of takes place by .
When the liquid is   its molecules expand and become dense and rise up.

In oil the molecules are very   to each other as compared to the .

Air is a conductor of .

The of oil exert a large ( repulsive )   that makes it very difficult to   oil