Density
Which phase of matter is the most dense?
Solids
What is water in the atmosphere called?
Water vapor
Name three layers of the atmosphere
Troposphere, Stratosphere, Mesosphere, Thermosphere, Ionosphere, Exosphere
What is used to measure air pressure?
A barometer
Which layer of the atmosphere has the most pressure?
The troposphere, with a pressure of over 1,000 millibars at sea level to 100 millibars at the top of the layer.
What is the density formula?
D=m/v
What percent of the air is oxygen?
21%
Which atmospheric layer is the hottest?
Thermosphere (about 932 degrees F to 3,632 degrees F)
What are the three factors that affect air pressure?
Water vapor, temperature, and elevation
What is ozone?
Three oxygen atoms chemically combine, forms naturally from lightning.
As altitude goes up, density goes _______.
Down
What is the percent of argon in the atmosphere? I
0.93
What are the two deepest layers?
The ionosphere (210 km) and exosphere (300 km)
Where would the air seem heaviest?
Sea Level
What layer contains the Aurora Borealis?
Ionosphere
Air pressure goes up when density goes __________.
Up
What are trace gasses?
Gasses found in the atmosphere that come in very small amounts
What are the two most shallow layers?
Troposphere (16 km) and the stratosphere (34 km)
As altitude goes up, air pressure goes _______.
Down
How big is the mesosphere?
It starts about 50 km from the ground and goes up to 95 km high.
What is density?
density is the amount of mass in a given volume
Name three things found in the atmosphere besides gasses.
Dust, smoke, salt, pollen
Which layer has a depth of 40 km?
Mesosphere
Is there less oxygen as the elevation goes up?
No, the oxygen molecules are just more spread out.
What color are nitrogen ions?
Blue