Hello friends!
I'm back to teach you all chapter 8.
Ok my eye is sore and I look like I just got punched :/
Omg I even feel like I got punched.

Okay, chapter 8 now chapter 8 yay yay yay! 8) So exciting.
no la haha i know it's not exciting i know i know~

Transfer of Thermal Energy!

This is important, so.. write it on your hand er write on your leg,

er just write it somewhere okay okay:

THERMAL ENERGY ALWAYS FLOWS FROM A REGION OF HIGHER TEMPERATURE TO A REGION OF LOWER TEMPERATURE.

And ofcourse there are ways to transfer THERMAL ENERGY and there are only three.

Conduction, convection and radiation.

CONDUCTION.


Convection is the transfer of heat by the actual movement of the warmed matter. Heat leaves the coffee cup as the currents of steam and air rise. Convection is the transfer of heat energy in a gas or liquid by movement of currents. (It can also happen is some solids, like sand.) The heat moves with the fluid. Consider this: convection is responsible for making macaroni rise and fall in a pot of heated water. The warmer portions of the water are less dense and therefore, they rise. Meanwhile, the cooler portions of the water fall because they are denser.

CONVECTION

Conduction is the transfer of energy through matter from particle to particle. It is the transfer and distribution of heat energy from atom to atom within a substance. For example, a spoon in a cup of hot soup becomes warmer because the heat from the soup is conducted along the spoon. Conduction is most effective in solids-but it can happen in fluids.

RADIATION
(Oh my god Im exhausted already, my eye..)

Electromagnetic waves that directly transport ENERGY through space. Sunlight is a form of radiation that is radiated through space to our planet without the aid of fluids or solids. The energy travels through nothingness! Just think of it! The sun transfers heat through 93 million miles of space. Because there are no solids (like a huge spoon) touching the sun and our planet, conduction is not responsible for bringing heat to Earth. Since there are no fluids (like air and water) in space, convection is not responsible for transferring the heat. Thus, radiation brings heat to our planet.

Yes it's abit wordy Im so sorry!

BUT EASY RIGHT?!?!?!?! Thermal energy funfun(y)

Lastly, a summary of my words!

Now, factors that actually AFFECT the rate of radiation!

WHEN GOOD CONDUCTORS OF HEAT LIKE:
Cooking Utensils, Iron rods and heat exchangers!
ARE USED,

the energy then is transferred quickly through a substance.

WHEN BAD CONDUCTORS OF HEAT LIKE:

Table mats, Sawdust, Wooden Ladles, Woollen clothes!
ARE USED...

it would insulate the heat and minimise loss of thermal energy
and prevents thermal energy from being transferred quickly!

That's it for chapter 8, do re read and re read till you get it.
OHHHHHHHHHHHHHH MY GOD BLESS MY EYE.

OHHH YOUTUBE IS GODDDDDDDDDDDDDDDDDDDDDDDDDDD! 8)