heat transfer Flashcards
1
Q
heat is what?
A
thermal energy
2
Q
temp is ?
A
how hot or cold
3
Q
what is the si unit for temp
A
kelvin (K)
4
Q
si unit for heat
A
joules (J)
5
Q
expansion is?
A
when substance becomes heated it becomes less dense and floats
6
Q
contraction is
A
when substance is cooled it becomes denser and sinks
7
Q
conduction is ?
A
things are all in contact and median is stationary
8
Q
convection is?
A
fluids ; density and convention currents
9
Q
radiation is?
A
without of a median
