Week 10Week 10

About About GreenhouseGreenhouse

Gases Gases

Greenhouse gases are gases in an atmosphere that *absorb and emit radiation within the *thermal infrared range.

atmosphere – gaseous mass surrounding Earth’s surfaceabsorb – to take in 흡수하다emit – to send outradiation- electromagnetic wavesthermal infrared range 열 적외선

About GreenhouseAbout Greenhouse GasesGases

This process is the fundamental cause of the greenhouse effect. The main greenhouse gases in the Earth’s atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone.

fundamental – necessary part of the systemvapor – mistcarbon dioxide – gas formed when someone breathesmethane – gas that is used as fuelnitrous oxide – colorless, sweet smelling gas

About GreenhouseAbout Greenhouse GasesGases

In our solar system, the atmospheres of Venus, Mars and Titan also contain gases (that cause greenhouse effects). Greenhouse gases greatly affect the temperature of the Earth. Without them, Earth’s surface would be on average about 33 colder than at present.

Venus – second planet from the sunMars – fourth planet from the sun aka “The Red Planet”Titan – satellite of the planet, Saturnsurface – outer layer

Human activities (since the start of the industrial era around the year 1750) have increased the levels of greenhouse gases in the atmosphere, causing the global warming. (Source: Wikipedia)

industrial era – period of time around the year 1750 when the use of machinery rose

Vocabulary• atmosphere – gaseous mass surrounding Earth• absorb – to take in 흡수하다• emit – sent out• radiation- electromagnetic waves• thermal infrared range 열 적외선 • fundamental – necessary part of the system• vapor – mist• carbon dioxide – gas formed when someone breathes• methane – gas that is used as fuel• nitrous oxide – colorless, sweet smelling gas• Venus – second planet from the sun• Mars – fourth planet from the sun aka “The Red Planet”• Titan – satellite of the planet, Saturn• surface – outer layer• industrial era – period of time around the year 1750 when

the use of machinery rose.