A view of Earth 1.2 <br />
Hydrosphere <br />The water portion of Earth; one of the traditional subdivisions of Earth’s physical environment. <br />
Atmosphere <br />The gaseous portion of the planet; the planet’s envelop of air; one of the traditional subdivisions of Ea...
Geosphere<br />Layer of Earth under both the atmosphere and the oceans; it is composed of the core, the mantle, and the cr...
Biosphere <br />All life on Earth; the parts of the solid Earth, hydrosphere, and atmosphere in which living organisms can...
Core <br />The innermost layer of Earth, located beneath the mantle; the core is divided into an outer core and an inner c...
Mantle <br />The 2890-Kilometer-thick layer of Earth located below the crust. <br />
Crust<br />Thin, rocky outer layer of Earth.<br />
Key Concept<br />What are the four major spheres into which Earth is divided? <br />Earth can be thought of as consisting ...
Key Concept<br />What defines the three main parts of the solid Earth?<br />Because the geosphere is not uniform, it is di...
Key Concept<br />Which model explains the position of continents and the occurrence of volcanoes and earthquakes?<br />The...
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D:\Students Documents\Earth Science 1 2

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D:\Students Documents\Earth Science 1 2

  1. 1. A view of Earth 1.2 <br />
  2. 2. Hydrosphere <br />The water portion of Earth; one of the traditional subdivisions of Earth’s physical environment. <br />
  3. 3. Atmosphere <br />The gaseous portion of the planet; the planet’s envelop of air; one of the traditional subdivisions of Earth’s physical environment. <br />
  4. 4. Geosphere<br />Layer of Earth under both the atmosphere and the oceans; it is composed of the core, the mantle, and the crust.<br />
  5. 5. Biosphere <br />All life on Earth; the parts of the solid Earth, hydrosphere, and atmosphere in which living organisms can be found.<br />
  6. 6. Core <br />The innermost layer of Earth, located beneath the mantle; the core is divided into an outer core and an inner core. <br />
  7. 7. Mantle <br />The 2890-Kilometer-thick layer of Earth located below the crust. <br />
  8. 8. Crust<br />Thin, rocky outer layer of Earth.<br />
  9. 9. Key Concept<br />What are the four major spheres into which Earth is divided? <br />Earth can be thought of as consisting of four major sphere: the hydrosphere, atmosphere, geosphere, and biosphere.<br />
  10. 10. Key Concept<br />What defines the three main parts of the solid Earth?<br />Because the geosphere is not uniform, it is divided into three main parts based on differences in composition- the core, the mantle, and the crust.<br />
  11. 11. Key Concept<br />Which model explains the position of continents and the occurrence of volcanoes and earthquakes?<br />The theory that finally emerged, called plates tectonics, provided geologists with a model to explain how earthquakes and volcanic eruptions occur and how continents move.<br />

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