What was the primary source of gases in the atmosphere? Correct
Answer-Outgassing
Outgassing (definition) Correct Answer-the release of volcanic gases
from the Earth's interior
What are volcanic gases made of? Correct Answer-carbon dioxide,
water, nitrogen, and other gases
What process produced most of the oxygen for animals and humans?
Correct Answer-Photosynthesis
What is the most abundant gas in the atmosphere (78%)? Correct
Answer-Nitrogen
What is the second most abundant gas in the atmosphere (21%)? Correct
Answer-Oxygen
What is the bottom layer of the atmosphere called? Correct Answer-
Troposphere
What is the second layer called in the atmosphere? Correct Answer-
Stratosphere
, What is the layer called within the Stratosphere (O3)? Correct Answer-
Ozone
What is the third layer called in the atmosphere (the "middle" layer)
called? Correct Answer-Mesosphere
What is the outermost layer called in the atmosphere? Correct Answer-
Thermosphere
Where is the Tropopause located in kilometers? Correct Answer-about
12 km
Where is the Stratopause located in kilometers? Correct Answer-about
51 km
Where is the Mesopause located in kilometers? Correct Answer-about
85 km
Where does all weather take place? Correct Answer-in the Troposphere
(weather)
What kind of current (conduction or convection) is found in the
Troposphere? Correct Answer-convection current
Does the temperature increase or decrease when going through the
Troposphere? Correct Answer-decrease