Convection Flashcards
1
Q
Convection can occur in…
A
Liquids and gases
2
Q
When air near a radiator is heated it will expand and become.. than the surrounding air
A
Less dense
3
Q
Why is the cooling element of a fridge placed at the top
A
Because air at the top is warmest, and is cooled and it sinks
4
Q
How do gliders stay up in the air without an engine
A
They use currents of rising warm air to circle upward and glide between thermals
