FINAL EXAM

QUESTION 1

The geosphere consists of the core, mantle and crust of the Earth.
The atmosphere contains all of the Earth’s air and is divided into troposphere, stratosphere, mesosphere, thermosphere and ionosphere. (1)
The hydrosphere consists of water in all forms (3) extending from the depths of the sea to the upper reaches of the troposphere where water is found. Ninety-seven percent of the hydrosphere is found in salty oceans, and the remainder is found as vapor or droplets in the atmosphere and as liquid in ground water, lakes, rivers, glaciers and snowfields.
The biosphere is the collection of all Earth’s life forms, distributed in major life zones known as biomes: tundra, boreal forest, temperate deciduous forest, temperate grassland, desert, savannah, tropical rainforest, chaparral, freshwater, and marine. (1) It also includes air, land, surface rocks, and water, within which life occurs. (2)








Although the four systems have their unique identities, there is substantial interaction between them. Environmental scientists study the effects of events in one sphere on the other spheres. For example, a volcanic eruption in the geosphere may cause profound direct and indirect effects on the hydrosphere, atmosphere and biosphere. (1)
I’ll also be able to use this information in the future when I go to college. Because I want to be an anistist, and to be that you need a degree in biological science or a nursing degree before you can go on further in college.

BIBLIOGRAPHY

(1) http://www.csun.edu/science/books/sourcebook/chapters/8-organizing/files/earth-systems-interactions.html

copyright 2007 Norman Herr, Ph.D.-Professor of science education-California State University, Northridge



(2) http://en.wikipedia.org/wiki/Biosphere


no copyright Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc


(3) http://en.wikipedia.org/wiki/Hydrosphere


no copyright Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc