HSEA 010 Chapter Notes - Chapter 3: Thermosphere, Water Cycle, Allotropes Of Oxygen
Document Summary
The earth"s atmosphere has a suitable combination of gases for life. The atmosphere is the different layers of gases that cover the celestial stars, attracted by their gravity until they stabilize around them, reaching different heights. Its chemical composition can be very varied and, in the case of our planet earth, it contains the air we breathe and the gases that allow the existence of life. The earth"s atmosphere is known as earth"s atmosphere and this article will focus on it. The earth"s atmosphere is unique in its composition in the solar system, as it contains the appropriate combination of gases important for life to take place on the planet"s surface. In the atmosphere, there are the conditions of temperature and pressure that allow the hydrological cycle, there is the ozone layer that shields the planet from solar radiation, and friction occurs that reduces meteorites from space to dust.