Atmosphere air.
Made with 78% nitrogen and 21% oxygen.
What is air made of?
It is an excellent shield to thermal radiation.
Is metal a good heat shield?
When there is a difference in thermal energy in a liquid or a gas.
What makes convection?
The transfer of energy by the movement of electromagnetic waves or subatomic particles.
What is radiation?
10.1% of its energy comes from the United States.
How much energy comes from the wind in the united states'?
It absorbs a portion of the radiation from the sun, preventing it from reaching the planets surface.
Why is the ozone layer important to Earth?
What makes heat rise?
Heat transfer cause by the rising of hotter, less dense fluids and the falling of cooler, dense fluids.
What is convection?
It can directly damage DNA within cells.
A way radiation is harmful.
It's the movement of air.
What is wind?
There wasn't any a long time ago, before humans, dinosaurs, plants, or even bacteria, Earth's air had no oxygen.
Is it true that at one time there was no oxygen?
The campfire heat transferred via convection shoots straight up into the sky and never reaches you.
When I sit by a campfire, how does its hot air heat me?
Works by areas of a liquid or gas heating or cooling greater than their surroundings, causing differences in temperatures.
How does convection work?
Radiation exposure from a properly functioning nuclear power plant is not always fatal.
Is radiation exposure from a nuclear power plant always fatal?
You can find wind farms in the Great Plains.
Where are wind farms located?
Blue light is scattered more than the other colors because it travels as shorter, small waves.
Why is the sky blue?
Transfer of thermal energy that occurs in solids, liquids, and gases when two substances of different temps touch.
What is conduction?
It is not harmful, and can be used in very good ways.
Is convection helpful?
It comes from unstable atoms that undergo radioactive decay, or it can be produced by machines.
Where does radiation come from?
The wind sources are clean and have reliable power.
What are the wind sources like in the United States?
How do we see wind?
Conduction plays a significant role in the transfer of heat within electronic devices and from the device to the environment.
Is conduction important?
Use of fans to cool down the rooms, etc.
What are the uses of convection in our day-to-life?
It travels 10 to 20 miles.
How far does radiation travel?
It is illegal if the wind turbines are in the wilderness park and etc.
Is it legal to have a wind turbine on your property?