Layers of the Atmosphere
How many layers are in the atmosphere?
5
What does the atmosphere contain that we need to survive?
Oxegyn
the most abundant gas in the atmosphere is
nitrogen
Where is air pressure greatest in the atmosphere?
The bottom
What layer of the atmosphere do we live in?
Trophosphere
What are the names of the layers in the atmosphere?
troposphere, stratosphere, mesosphere, thermosphere and exosphere
The atmosphere provides CO2 for?
Plant nutrients in order to grow. (Carbon Dioxide)
The gas that makes up about 21% of the atmosphere
Oxegyn
As altitude increases air pressure...
decreases
water vapor enters the atmosphere through...
evaporation
What layer of the atmosphere is the farthest from the earth's surface?
Exosphere
What is the main function of the atmosphere?
Protects us from harmful ultraviolet solar radiation.
Excess of this gas contributes to global warming
Carbon dioxide
as the density of air increases, the air pressure does this
decreases
When did our atmosphere stop changing?
200 million years ago
Which layer of the atmosphere contains weather?
Troposphere
If the atmosphere did not contain an ozone layer, which of the following could happen?
The Earth would not be protected from the sun's harmful rays.
What gas is about 0.9 percent of the atmosphere?
argon
Air pressure is measured in which two units?
millibars & inches
How long does water vapor stay in the atmosphere?
9 days
This layer of the atmosphere is the coldest part of the atmosphere and meteors burn up in this layer...
Mesosphere
How does the atmosphere provide sound?
Provides a medium at which soundwaves travel.
How much carbon dioxide ( co2) is in our atmosphere today?
.04%
What is the instrument that measures air pressure?
barometer
What gases were in the atmosphere 4600 million years ago?
Hydrogen and helium