Layers of the atmosphere and pressure last half or semester Flashcards
What is the atmosphere?
The layers of gases that surround Earth.
How many major layers are there in the atmosphere?
5
How many major layers are there in the atmosphere?
5
What are the boundaries between each layer called?
“Pauses”
What would the boundary between the troposphere and the stratosphere be called?
Tropopause - you take the lowest layer as the first prefix.
The atmosphere does not float off into space because of _____?
Gravity.
Why is the atmosphere helpful?
It allows us to breath and it holds in heat.
What does the atmosphere protect us from?
Harmful solar radiation, solar winds, and meteors.
What is the atmosphere made of?
78% Nitrogen
21% Oxygen
1% All other gases
True or false - Parcles of air can vary greatly.
True.
What will affect the composition of the atmosphere?
Addition of water vapor.
What are the layers of the atmosphere defined by?
Temperature.
What is the closest layer to the surface?
Troposphere - 0-10 km
What does the troposphere contain?
Our water.
Where do planes fly in the troposphere?
In the upper level.
Temperature decreases with ______?
Altitude.
Pressure decreases with ______?
Altitude.
What does the tropopause separate?
The troposphere and the layer above it.
What is air pressure?
Weight of the atmosphere pressing down on the surface of the Earth.
What is air pressure measured in?
Millibar/PSI/atm
Where will you experience the greatest atmospheric pressure?
Closest to Earths surface.
