Chapter 18 - Earth's Atmosphere Flashcards
How was the atmosphere formed?
By a direct act of God
Atmosphere
The envelope of gases that surrounds our planet
Firmament
Great expanse
Who is often called the father of chemistry?
Antoine Lavoisier
What did Karl Wilhelm Scheele work with?
Oxygen
What did Joseph Priestley work with?
He made many groundbreaking advances in our knowledge of the chemistry of gases and electricity
What is one of nitrogen’s main purposes?
To dilute oxygen
What is the volume of the atmosphere?
21% oxygen, 78% nitrogen, and 1% other gases
Which gas is the most abundant in the atmosphere?
Nitrogen
Which layer has several layers of different gases?
Heterosphere
Which layer has all the gases mixed together?
Homosphere
What gases are in the heterosphere?
Nitrogen, atomic oxygen, helium, and molecular hydrogen
Which layer is the hottest?
Exosphere
What gases are in the exosphere?
Oxygen, helium, and hydrogen
Which layer is the coldest?
Mesosphere
Which layer do most people live in?
Troposphere
Lapse rate
Stray change in temperature
Where do aircraft flying long distances fly?
Stratosphere
Why do the aircraft fly in the stratosphere?
To avoid turbulent storms
Jet streams
Winds in the stratosphere that blow very fast
What layers lie within the homosphere composition layer?
Troposphere, stratosphere, and mesosphere
What layers are not in the ionosphere?
Stratosphere and troposphere
Where does the ionosphere start?
Mesosphere
What is the largest carbon reservoir in the carbon cycle?
Atmospheric carbon dioxide