Flow Of Heat And It's Effects - Coggle Diagram
Flow Of Heat And It's Effects
Heat Energy is the energy of movement of molecules.
Heat Causes increase in temperature
Heat causes Expansion
Heat causes change of State
Heat causes chemical changes
Heat affects living Organisms
Solids expand on Heating
Liquids expand more than solids when heated
Gases expand even more on heating than liquids and solids
The Degree of hotness or the coldness of a body is known as its temperature
scale is used to measure temperature. For scientific work, the
scale is used
The instrument used to measure temperature is known as the
There are 2 types of thermometers-
Laboratory and Clinical
usually contain liquids which rise up to tell the temperature. The most commonly used liquid is
As the temperature rises the bulb expands and rises into the
- This thermometer has a slight bend or kink in the stem just above the bulb so when the thermometer is taken out of your mouth, the liquid in the bulb contracts and the mercury level breaks at the kink. Therefore the level of the mercury in the stem remains the same.
Heat Flows in 3 different ways - Conduction,Convection,Radiation
is the process of transfer of heat in which
heat travels from molecule to molecule, from the hot end to the cold end.
The molecules themselves do not travel from one end to the other.
Conduction only takes place in solids
Materials which allow heat to be conducted through them easily are called
good conductors of heat.
Materials which do not allow heat to pass through them easily are called
bad conductors of heat or insulators of heat
is the process of transfer of
heat in which the heated molecules of the liquid or gas themselves move to carry heat from the hot to the cold region.
Convection only takes place in liquids and gases.
Sea breeze and land breeze are convection currents
. When the air above the land becomes hotter and lighter and rises up. The air from the sea which is cooler and heavier rushes to take the place created by hot rising air which is known as
The exact opposite happens with
is the emission or transmission of energy in the form of waves or particles through space or through a material medium.
Radiation only takes place in gases