Heat Transfer

hey guys! this week were talking about heat!!


no not that Heat! I'm a Hawks fan....
But on a more serious note, were talking about the other heat.

ya! that's the one!!!
heat is a big part of our life and is very important to us humans. As you (should) know, we are warm bodied creatures and operate properly when warm.
there are three ways to conduct heat. there is Conduction, Convection, and Radiation.

Conduction is transfer of heat through direct contact. In the picture above, the fire is heating up the pot, and the hear eventually travels up to the handle, therefore burning you.
Then there's Convection. Convection is the transfer of thermal energy by the movement of atoms or molecules from one part of a material to another.
think of it like this: you have a pot of boiling water over a stove. now the water at the bottom heats up, and since heat rises, it pushes down the cold water so it can heat up and thus the cycle of convection!As shown below.

and last but not least, there's radiation. Radiation occurs when energy is transferred by electromagnetic waves. So lets say you're sitting in front of a bonfire.  you can feel the heat right? That's because of Radiation. The heat waves are being tansferred from the fireplace to you!
 


 CONDUCTORS
 
*sigh* not that kind of conductor!! I'm talking about a conductor of heat you silly munchkins!
A conductor of heat is pretty much moves heat energy between two points.Have you ever wondered why a blanket keeps you warm? well the answer is simple: Blankets are insulators. it's job is to prevent the transfer of heat from one side of it through the other side. It can work for both heat and cold. if you wrap an ice block in a blanket, it will stay cold. foam, feathers, and fur are very poor conductors of heat. Why? Because they trap air, which is also a poor conductor of heat. They hold surfaces away from one another, so its stops Conduction.

here's a question- if you want to heat a room evenly, where should you place a heater- on the floor or near the ceiling? ill pause for a second to let ya'll think through it.

  jk i don't have a snack bar... i wish i did though!

Ok. if you said "on the floor!! that's common sense!!!!" then your correct!!!!! you see, heat and hot air rises. so if you placed the heater on a high shelf, you would be heating the ceiling. which would be great if you were eating on the ceiling with Mary Poppins!

before i leave ya'll, here are three weird, and completely random facts about heat. 
1. the flapping of 1,000 bees wings generates 7 watts of heat
2. The highest temperature ever recorded in the shade was 57.8C (136F) in Libya on September 13 1922.
3. The skin of a polar bear is black, which helps it to absorb more of the heat from the sun.
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hey guise- i hope you enjoyed my blog post this week. it was fun to make and i hope it was fun to read!! 
(special thanks to my cousin for helping me some with making it!!)

well i gtg. dont be sad though! and if you are than:

oh whale,



here are my links: (speaking of heat......)

Miami heat

the three c's

heat gif

train gif

                        intermission