This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Chapter 3: Earths Modern Atmosphere Atmospheric Composition, Temperature, and Function Principle substance of atmosphere is air. Air simple mixture of gases that sis naturally odorless, colorless, tasteless, and formless, blended so thoroughly that it behaves as if it were a single gas. Top of atmosphere is around 480 km above Earths surface. Exosphere outer sphere that contains scarce lightweight hydrogen and helium atoms weakly bound by gravity as far as 32000 km from earth. Air Pressure weight of the atmosphere. (Approximately 1kg/cm^2 at sea level) Heterosphere the outer atmosphere in terms of composition Begins at about 80 km and extends outward to the transition to the exosphere and interplanetary space. Gases are not evenly mixed. Homosphere extends from an altitude of 80 km to the Earths surface....
View Full Document
This note was uploaded on 04/18/2008 for the course GEOG 101 taught by Professor Thebpanya during the Fall '07 term at Towson.
- Fall '07