earths atmosphere CP2 Flashcards
atmosphere
respiration meaning
breathing
combustion meaning
to burn something
condense meaning
to make something more concentrated
deforestation meaning
to cut down plants and trees
greenhouse gas meaning
gasses in the earths atmosphere that trap heat in
what gas made up 95% of the earths first atmosphere
carbon dioxide
how did the first oceans form
volcanoes released water vapor which turned condensed into water to form the ocean
why did co2 levels decrease
land plants evolved to photosynthesizes meaning they were extracting the carbon dioxide
atmosphere stats ….
78%-nitrogen
21%-oxygen
0.03%-carbon dioxide
other gases -0.97%
name 3 greenhouse gasses
carbon dioxide
methane
nitrous oxide
how do greenhouse gasses cause global warming
they absorb the sun’s heat that radiates from the Earth’s surface, trap it in the atmosphere and prevent it from escaping into space
how does deforestation lead to an increase of co2
as there are less trees to absorb the carbon dioxide and turn it into oxygen
how does respiration lead to an increase in the amount of co2
as inhale oxygen and it is exchanged into carbon dioxide and exhaled
how does the use of fossil fuels increase co2 levels
the burning process combines carbon with oxygen in the air to make CO2.
how is methane added to the air
due to animals excreting methane gas
