IT'S CONVECTION WEEK AHA;

Howdy peeps!
We have started on a new section of this chapter.
And its CONVECTION.
Say it with me, CONVECTIONNNNNNNN :D:D

The usual question:
WHAT IS CONVECTION.
What is it? Huh huh huh?
Well well well,

C-O-N-V-E-C-T-I-O-N is:
- another process of thermal energy transfer
- the transfer of thermal energy by means of currents in a fluid (liquid or gas)

Next, another important thing that we have to note is that there's this thing called convection currents!

A CONVECTION CURRENT is none other than the movement of fluid caused by the change in density in various parts of the fluid.

Yeahhh.
Okay I'll end off here for today.
Simple and easy :))

Oh but one last thing to note,
VERY VERY VERY SUPER DUPER UBER IMPORTANT ONE,
MUST MUST MUST ALWAYS REMEMBER,
CANNOT EVER FORGET,
that convection currents only occur in fluids such as liquids and gases but not in solids!

Wanna know why? :D
Its because convection involves the bulk movement of fluids which carry thermal energy with them.
As for solids, remember that thermal energy is transfered from one particle to another through vibrations? (Memory refresh!) :D
There is no bulk movement of the particles itself. For solids I mean.
So yeah, that's why!