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Heat transfer
Question | Answer |
---|---|
Three methods of heat transfer | Conduction Convection Radiation |
Conduction | Transfer of heat through a solid |
Transfer of heat through a liquid or gas | Convection |
Transfer of heat without the use of a medium | Radiation |
The method of heat transfer by which heat from the sun reaches the planet | Radiation |
The method of heat transfer by which a metal spoon gets hot | Conduction |
A change in state without a change in temperature is called | Latent heat |
On heating solid, liquids and gases | Expand |
On cooling solids, liquids and gases | Contract |
Ball and ring is used to show | Solids expand on heating and contract on cooling |
Why does the water rise up the glass tubing when the air in round bottom flask cools | Vacuum is present in round bottom flask |
When you increase the pressure what does it do to the boiling point of water | Increases it |
When you decrease the pressure what does it do to the boiling point of water | Decreases it |
Heat | Form of energy |
This metal is the best conductor of heat | Copper |
Which surface the dull surface or shiny surface is a better radiator of heat | Dull surface |
The two metals that make up a bimetallic strip | Copper and iron |
Why does the Bimetallic strip bend | The copper expands more than the iron |
The temperature at which water has its maximum density | 4 |
The temperature at which water boils | 100 |
The temperature at which water freezes | 0 |