Topic 2:Spheres of Earth

Earth’s SpheresEarth is made up of spheres, arranged from lowest density (above Earth) to highest density (center of Earth).

Interface – boundary between different layers

Earth’s Spheres1. Atmosphere – layer of gases above Earth’s surface.

Earth’s Spheres2. Hydrosphere – layer of liquid water between the atmosphere and Earth’s interior.

Earth’s Spheres3. Lithosphere – layer of solid rock below

hydrosphere and atmosphere• Divided into lithospheric plates• Crust = the upper part of the lithosphere

Earth’s Spheres4. Earth’s Interior – extends from the Earth’s surface to the Earth’s center.