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The Earth’s Spheres. By: Mr. Meringolo. What is the Earth system?. The Earth system is all the matter, energy, and processes that occur within the Earth’s boundary.

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the earth s spheres

The Earth’s Spheres

By: Mr. Meringolo

what is the earth system
What is the Earth system?
  • The Earth system is all the matter, energy, and processes that occur within the Earth’s boundary.
  • The Earth is made up of nonliving things such as rocks, air, and water as well as living things such as trees, animals, and people.
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The Earth system can be divided into five main parts known as the geosphere, the hydrosphere, the cryosphere, the atmosphere and the biosphere

the geosphere
The Geosphere
  • The geosphere is the mostly solid, rocky part of Earth. It extends from the center to the surface of Earth.
  • The geosphere is divided into three layers: the crust, the mantle, and the core
the layers of the geosphere
The Layers of the Geosphere
  • The Crust is the thin, outermost layer of the geosphere.

The Crust is divided into plates.

Oceanic Crust-Crust beneath the oceans ,5 to 10 km thick

Continental Crust- 15 – 75 km thick, make up continents

  • The Mantle lies just beneath the crust and is about 2,900 km thick. Movements in this layer move the plates of the crust.
  • The Core -central part of the earth

with a radius of 3,400 km.

Made of Iron and nickel

the hydrosphere
The Hydrosphere
  • The hydrosphere is the part of Earth that is liquid water.
  • Includes the water in lakes, rivers, marshes, clouds, rain, and even water found underground.
  • Oceans cover 71 percent of the earths surface
  • 97 percent of all water on Earth is saltwater.
the c ryosphere
The Cryosphere
  • The Cryosphereis made up of all the frozen water on Earth
  • Includes all the snow, ice, sea ice, glaciers, ice shelves, icebergs, and the frozen ground.
  • Most of the frozen water on Earth is found in the ice caps in Antarctica and in the Arctic.
  • Amount of frozen water changes

with seasons and play an important

role in climate and species survival.

the atmosphere
The Atmosphere
  • The mixture of mostly invisible gases that surround the Earth belong to the atmosphere. The atmosphere is mostly Nitrogen (78%) and Oxygen (21%) with the remaining 1% made of many other gases.
  • The atmosphere traps some energy from sun ray’s, absorb and reflect harmful UV

rays, and help burn debris

from outer space.

the biosphere
The Biosphere
  • The Biosphere is made up of living things and the areas of Earth where they are found.