Spheres
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The Four Spheres of Earth: Hydrosphere, Atmosphere, Biosphere, and Solid Earth, Slides of Earth Sciences
An overview of the four spheres of earth: the hydrosphere (water), atmosphere (air), biosphere (life), and solid earth (land). It explains that earth is a self-contained planet and discusses the characteristics of each sphere, including the hydrologic cycle and the sources of power for natural phenomena.
Typology: Slides
2011/2012
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Spheres
Four Spheres
A view of Earth
Earth is a planet
that is small and
self-contained
Earth’s four
spheres
Hydrosphere Atmosphere Biosphere Solid Earth
Hydrosphere: Water on Earth
Ocean covers 70% of the planet’s surface
- average depth = 3.7 km or 2.3 miles or 12,000 feet
Hydrologic Cycle
What provides the power for
hurricanes and volcanoes?
The Earth system is powered by the Sun that drives external processes in the Atmosphere Hydrosphere At Earth’s surface The Earth system is also powered by heat from the Earth’s interior