Conduction, convection and radiation · चालन, संवहन और विकिरण
Spoon in tea, boiling water, sunshine — which way is the heat travelling?
Conduction, convection and radiation games
Three ways heat travels ऊष्मा का स्थानांतरण
| Way | How | Where | Example |
|---|---|---|---|
| Conduction चालन | Heat passes from particle to particle; the particles stay in place | Mostly solids | Spoon handle gets hot in tea |
| Convection संवहन | The warm part itself moves up; the cool part comes down | Liquids and gases | Boiling water; sea breeze |
| Radiation विकिरण | Heat travels without any medium | Even through empty space | Sunlight; warmth of a fire |
Conductors of heat (सुचालक): metals such as copper, aluminium, iron. Insulators (कुचालक): wood, plastic, air, wool. Dark surfaces absorb more heat than light ones.
Sea and land breeze: by day land heats faster, warm air over land rises and cool air from the sea blows in (sea breeze); at night it is the other way (land breeze). Also see conductors and insulators and °C to °F.
Goes with NCERT Science Class 7 (Heat).
A one-page chart to stick on the wall, and a worksheet to practise.
Conduction, convection and radiation
Three ways heat travels ऊष्मा का स्थानांतरण
| Way | How | Where | Example |
|---|---|---|---|
| Conduction चालन | Heat passes from particle to particle; the particles stay in place | Mostly solids | Spoon handle gets hot in tea |
| Convection संवहन | The warm part itself moves up; the cool part comes down | Liquids and gases | Boiling water; sea breeze |
| Radiation विकिरण | Heat travels without any medium | Even through empty space | Sunlight; warmth of a fire |
Conductors of heat (सुचालक): metals such as copper, aluminium, iron. Insulators (कुचालक): wood, plastic, air, wool. Dark surfaces absorb more heat than light ones.
kheloaurseekho.in — free charts, games and worksheets
Conduction, convection and radiation — worksheet
Name: ____________________ Class: ______ Date: __________
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