A View of Earth
Section 1.2

The Four Spheres of the Earth
Earth is traditionally categorized into four major
spheres.

The Four Spheres of the Earth
Earth is traditionally categorized into four major
spheres.
SPHERE does not refer to the geometric solid.

The Four Spheres of the Earth
Earth is traditionally categorized into four major
spheres.
SPHERE does not refer to the geometric solid.
Hydrosphere - The water portion of the planet.

Hydrosphere
Cycle: The Water Cycle
97% of water is salt
water (oceans)
3% of water is fresh
water (groundwater,
streams, lakes, glaciers)