Skip Navigation
Button that takes you to the Dinosaur Floor page.Button that takes you to the Earth Floor page.Button that takes you to the Resource Room page.Button that takes you to the Teacher's Lounge page.Button that takes you to the Elevator page.
     

Image that says Spheres.
Animation showing the different spheres of the Earth.  Please have someone assist you with this.

"Spheres, spheres, spheres, spheres, spheres! The universe is full of spheres! A marble is a sphere. A basketball is a sphere. A balloon is a sphere--well, almost. The Sun is a great, big, giant, super-colossal, boiling hot sphere!Image of a dinosaur with a basketball.

Even Earth is a huge sphere. In fact, you can think of Earth as a whole bunch of spheres, one inside the other, something like the colored layers inside a jawbreaker. From the inside out, Earth's spheres are:

The Lithosphere ("rock sphere") is the ground you are standing on and the whole inside of Earth.

The Hydrosphere ("water sphere") includes all of the rivers, lakes and oceans of Earth.

The Cryosphere ("icy cold sphere") is the frozen part of Earth: the glaciers, icebergs at sea, and the huge icecaps in Greenland and Antarctica.

The Biosphere ("Life sphere") includes all living things: the trees in the park, the birds in the air, the fly on your wall, the viruses that make you sick, your pets, and even you and all your friends!

The Atmosphere ("Air Sphere") is the envelope of air that surrounds the whole Earth.

The Exo- or Celestial Sphere ("Outside or heavenly sphere") includes the whole universe beyond the top of the atmosphere--the Sun, Moon, and stars, as well as the asteroids and the little bits of dust that make meteors when they hit the atmosphere.

OK, so Earth is made of a bunch of spheres. But are the "spheres" really exact spheres?

Next

 

 


Image that says Earth Floor.
Button that takes you to the Diversity page.
Button that takes you to the Adaptation page.
Button that takes you to the Plate Tectonics page.
 Button that takes you to the Cycles page.
Button that takes you to the Spheres page.
Button that takes you to the Biomes page.
Button that takes you to the Geologic Time page.

Image of a star. Spheres
Lithosphere
Hydrosphere
Cryosphere
Biosphere
Atmosphere
Exosphere
Exact Spheres
 
             
     
Button that takes you to the Exploring the Environment home page.

Spheres | Lithosphere | Hydrosphere | Cryosphere | Biosphere | Atmosphere | Exosphere | Exact Spheres

Diversity | Adaptation | Plate Tectonics | Cycles | Spheres | Biomes | Geologic Time

  Image of a castle that links back to the MSESE home page.  
Button that takes you to the Dinosaur Floor page.Button that takes you to the Earth Floor page.Button that takes you to the Resource Room page.Button that takes you to the Teacher's Lounge page.Button that takes you to the Elevator page.

Site maintained by the ETE Team
Last updated on
April 28, 2005

Some images 2004 www.clipart.com

Privacy Statement and Copyright 1997-2004 by Wheeling Jesuit University/NASA-supported Classroom of the Future. All rights reserved.

Center for Educational Technologies, Circuit Board/Apple graphic logo, and COTF Classroom of the Future logo are registered trademarks of Wheeling Jesuit University.