Chapter 15 the restless atmosphere Flashcards
What is the atmosphere made of
Various gases, including nitrogen and oxygen
What percentage of nitrogen is in the atmosphere
78%
What percentage of oxygen is there in the atmosphere
21%
What percentage of others, including carbon dioxide and ozone is there in the atmosphere
1%
What does the atmosphere provide us
Life on earth, the air we breath, absorbs heat from the sun by day, retains heat at night, protects us from harmful rays from the sun
What is the most important layer of the atmosphere
the troposphere
Describe the troposphere
The layer that is closest to the earth, 12km thick, contains 75% of earth gases, contains 99% of the atmospheres water vapour
How many layers are there in the atmosphere
4
What percentage of solar energy from the sun is reflected by clouds and dust in the atmosphere and the ozone layer
25%
What percentage of solar energy from the sun is absorbed by the atmosphere and the dust and water vapour that it contains
25%
What percentage of solar energy actuallt gets to the earths surface
50%
