Spheres of Earth
Sphere of Earth: A layer that surrounds the Earth
The Four Spheres Atmosphere: Shell of gases that surrounds a planet, for example, Earth Earth’s atmosphere is unique because it contains oxygen Atmosphere = Air Lithosphere(also known as Geosphere): Solid portion of Earth below the atmosphere and the hydrosphere Includes: rocks, mountains and beaches
Hydrosphere: Earth’s liquid water Includes: oceans, lakes, streams and groundwater Biosphere: The portion of Earth that supports life, from far down in the ocean to high up in the sky a. Plants and animals are part of the biosphere
Interactions Earth is the only known planet currently supporting life due to the interactions among its four spheres. The four spheres of the Earth system are constantly moving and changing