The Four Spheres.

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Presentation transcript:

The Four Spheres

Geosphere This term refers to the EARTH. It is made up of four separate spheres: lithosphere atmosphere hydrosphere biosphere

Lithosphere Solid part of the Earth Includes: soil, rocks, mountains, continents, crust, mantle, and core 4.6 billion years old Energy flow allows for the lithosphere to constantly changing and develop

Atmosphere Made up of gases that encircle the planet Nitrogen Oxygen Carbon dioxide Formed from gases given off by volcanoes Constantly changing and evolving

Hydrosphere Made up of all of the Earth’s water elements. Includes: Oceans Seas Lakes Glaciers Rivers Streams groundwater

Biosphere Consists of all of the planet’s living elements: Plants Animals People Most recent of the spheres to develop

LIFE and the spheres Life began in the hydrosphere (water), but later moved to the lithosphere (land) as the atmosphere (air) became better suited to sustaining life.

Spaceship Earth The Earth is like a spaceship that provides essentials for life Closed System A system in which there is no transfer of matter into or out of a structure – nothing leaves or enters Open System A system that is not separate from its environment but transfers matter in and out of it This is the Earth – it is constantly being renewed by its own forces – it is a constantly changing environment

video http://www.youtube.com/watch?v=ojGYJZntEmI

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