Heat Flashcards
Can heat energy travel?
Yes
What is temperature?
How hot or cold something is
How is temperature measured?
With a thermometer
When does water freeze and boil?
0 degrees C + 100 degrees C
Does heat travel from low to high or high to low?
High to low
How does heat travel from particle to particle
By vibrators
Is conduction in liquids, gases or solids?
Solids
Is metal a good or bad conductor?
Good
What is a bad conductor called?
Insulator
Why is air a good insulator?
It’s made of gas
When does convection happen?
When hot particles go up and cold ones go down
What does convection work well with?
Liquids and gases
What does convection not work well with?
Solids
Why does convection not work well with solids?
Because it needs to move
What is an example of something which uses convection?
A hot air balloon
Heat travels as a wave of radiation, what is it called?
Infrared radiation
True or False, Infrared radiation cannot travel in solids, gases and vacuum.
False
How does heat travel here using infrared radiation?
From us, to sun, through vacuum.
Which colours absorbs more light, dark or light?
Dark
Where is heat escaping through houses?
Roof, walls, floors, windows, doors
How is heat lost
Conduction, convection, radiation
How can we prevent heat loss?
Double glazed windows, carpeted floors, drought excluders, wall + loft insulation, curtains over windows, foil being radiators