Heat Flashcards
When does convection take place
When the molecules are heated
What is convection
The final way is transferred from one place to anther
What does dense mean
A closely packed substance
Why does heated air rise
Because it expands becoming less dense and because of this it rises
What is an convection current
When cold air is heated and become less dense and rises then it becomes more dense and falls creating a cycle
Are particles involved in radiation
No
What does conductor mean and what is an example of one
It is good at keeping or preserving or getting something like black surfaces are good emitters of radiation
How does thermal energy occur
When a substance is heated it gains energy and becomes hotter through thermal energy.
Name a good conductor of there,Al energy and a bad one
Metal good
Plastic and air bad
