Science Project

Science Project

Published on 14 October 2020

Convection, Radiation, and Conduction for Mrs.Davenport

Transcript
00:00
Conduction is heat transferred through two objects touching each other.
00:00
Example: A straw getting heated by hot chocolate when it touches the hot chocolate, or a tea pot getting heated by an oven.
00:00
In my presentation, I showed a straw touching hot chocolate then getting heated up from the hot chocolate.
00:11
Convection is heated energy passed through a liquid or gas.
00:11
Examples: A teapot's steam is rising out of the teapot holding heat, or hot air rising and cold air sinking.
00:11
In my presentation, I showed someone putting their hands above fire to warm up their hands because heat rises.
00:25
Radiation's definition is heat travelling in waves with no medium.
00:25
In my presentation, I showed the sun radiating heat and sunlight onto Earth. The arrows represent the radiation.
00:25
Examples: The sun putting heat down on Earth, or a lizard warming up under a heat lamp.
00:35
A similarity of conduction and convection is that they are both easily heated. Usually when there is conduction, I have found that there is also convection. Like a teapot. Conduction from the oven to the teapot heats the teapot which heats up the water and the water holds the heat. That water releases steam holding heat as well.
00:35
A similarity between convection and radiation is that they both travel around and aren't in the same spot most of the time. One travels in air and the other travels in nothing.
00:35
A similarity between conduction and radiation is that they get each other to work. Radiation goes to an area heating it up then, conduction uses that heat to heat something else touching it.
00:40
Another similarity of conduction and convection is that they both are used when you have a fire pit. When your marshmallow is in the fire it is conduction, when it is over the fire it is convection.
00:40
Another similarity of conduction and radiation is both of their particles and atoms move very fast.
00:40
Another similarity between convection and radiation is that they both travel in the atmosphere.
00:45
A similarity of all three is that they all control heat. Conduction releases heat when two objects touch each other and holds the heat inside the object. Convection releases heat and controls heat through liquids and gasses. Radiation holds heat when there is nothing there.
00:51
Thanks For Watching!
00:56
BY Daniel SHore