GEOG 2050 Chapter : Geography Chapters 1 And 2
Document Summary
Gases in the atmosphere: 99% of the atmosphere is composed of nitrogen and oxygen, greenhouse gasses: a gas that can absorb and emit thermal energy, create the greenhouse effect. Gas sources and sinks: gases enter the atmosphere through a source, and they leave the atmosphere through a sink, gas sources can be both natural and anthropogenic, anthropogenic: created or influenced by people. Aerosols in the atmosphere: aerosols: microscopic solid or liquid particles suspended in the atmosphere, clouds are composed of aerosols (cloud droplets, cloud droplets: microscopic drops of liquid water found in clouds, other aerosols include pollen and bacteria. 1) earths revolution and the plane of the ecliptic: earths revolution around the sun follows the flat plane of the ecliptic, each revolution takes 365 . 25 days. 2) axial tilt: earth"s axis is tilted 23. 5 degrees in relation to the flat plane of the ecliptic. 4) subsolar point the sun"s rays are exactly perpendicular to.
