Download The Earth*s Four Spheres

Atmosphere
The atmosphere consists of a gaseous envelope
surrounding the earth.
Composed of a mixture of gases.
Provides living things with oxygen and carbon
dioxide,
Some gases serve as a protection against
harmful radiation.
Geosphere
Made up of the rocks, mountains, beaches and
all other features of our planet except for water.
Ocean basins, rock layers and the mantle make
up the geosphere as well.
Minerals, such as iron and copper are a part of
the geosphere.
The geosphere is constantly changing.
Hydrosphere
All the water on the planet (oceans, lakes,
rivers, ice and snow in the poles.)
Water is either salt or fresh. Most of
Earth’s water is salty.
Water is continually recycled.
Biosphere
Composed of all living things.
The interactions among the three
other spheres allows for life to
continue to grow.
Interactions among the
Spheres
The four spheres are constantly moving,
changing and interacting.
Volcanoes (geo) erupt, sending ash and gas into
the air (atmo) and lava and ash down onto
surrounding forests (bio) and human habitations
(bio).
Changing the Spheres
Some changes to the spheres can take
thousands or millions of years.
It can take many forms.
Changes can be personal, especially when they
involve the biosphere. (storms, earthquakes,
etc.) Humans can also change other spheres
(pollution affecting the atmosphere.)
Examples
Examples
Examples
Examples
Examples