Atmospheric Structure
There are only ___________ layers of the atmosphere.
What is four?
The distance above sea level.
What is altitude?
This element makes up 78% of the atmosphere.
What is nitrogen?
This is how energy travels to Earth.
What are electromagnetic waves?
This includes all the colors you can see in the rainbow.
What is visible light?
The thermosphere is divided into two parts: the ______________ and _____________.
What are the ionosphere and the exosphere?
As altitude increases, ________________ decreases.
This element makes up only 21% of the atmosphere?
What is oxygen?
Nearly all energy on Earth comes from ___________.
What is the sun?
These are the colors of the visible light spectrum (rainbow).
What are red, orange, yellow, green, blue, indigo, and violet?
This layer is where meteoroids are "burnt up on entry".
What is the mesosphere?
As air pressure decreases, so does _____________.
What is air density?
This is the cause of global warming.
What is an increase in carbon dioxide?
This is the measurement for how long (far apart) a wave is.
What is a wavelength?
This color has the longest wavelength.
What is red?
This atmospheric layer is where weather occurs.
What is the troposphere?
Air pressure and air density are at their highest ____________.
What is at sea level?
This layer contains the ozone layer.
What is the stratosphere?
This is how we measure how large (tall) a wave is.
What is amplitude?
This color has the shortest wavelength.
What is violet?
Name all four layers of the atmosphere in order from lowest (closest to the surface) to highest (furthest from the surface).
1. Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere
This is the instrument used to measure air pressure.
What is a barometer?
The Aurora Borealis occurs in this sub-layer.
What is the ionosphere?
The top of a wave is called the ________ and the bottom is called the ___________.
What are the crest and the trough?
These forms of radiation are not visible to the human eye; one is longer than red light and the other is shorter than violet light.
What are infrared radiation and ultraviolet radiation?
This sub-layer is important for communication because it contains these important pieces of equipment.
What are the exosphere and satellites?
This is the unit of measurement we use to measure altitude.
What are kilometers (km)?
These are three reasons the atmosphere is important.
1. suitable for life
2. warm enough for water to remain liquid
3. protects us from dangerous radiations
True or False:
All types of radiation in the electromagnetic spectrum are able to penetrate through the atmosphere to Earth's surface.
False.
Some microwaves and infrared waves get blocked, as well as x-rays, gamma rays, and more dangerous ultraviolet rays.
This wave can be the size of a skyscraper.
This wave is smaller than an atom.
What is a radio wave?
What is a gamma ray?