By: William Bray

The Lithosphere  (Definition) The rigid part of Earth’s mantel.  The lithosphere also provides a conductive lid on top of the mantle. ( the crust)  The lithosphere includes the crust and the upper mantle, which consists of hard outer layer of the Earth.(the crust)Witch is also part of the planet’s tectonic plats. There are currently over 100 tectonic plats on the Earth.  The lithosphere also got its name from Joseph Barrell.

The Hydrosphere (Definition)The water cycle of the Earth. The hydrosphere describes the combined mass of water found on, under, and over the surface of Earth The hydrosphere cause’s evaporation from all wet surfaces including oceans, rivers, lakes, soil and the leaves of plants. Approximately 75% of the Earth's surface is covered by water The total mass of Earth’s Hydrosphere makes up 0.023% of Earth’s mass.

The Biosphere  (Definition) The total sum of living organisms.  The place on Earth's surface where life dwells.  The biosphere is postulated to have evolved, beginning through a process of biogenesis or biopoesis, at least some 3.5 billion years ago.biogenesisbiopoesis  The biosphere is any closed, self-regulating systems containing ecosystems.  The biosphere consists of global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, Hydrosphere, and the Atmosphere.ecological  The term "biosphere" was coined by geologist Eduard Suess in 1875.

The Atmosphere  The Atmosphere is manly a layer of gases surrounding the planet Earth that is kept in place by Earth's gravity.  The atmosphere protects life on Earth by absorbing ultraviolet solar radiation,ultravioletsolar radiation  The Atmosphere manly consists of five layers, The Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.  (First layer) The Troposphere is the lowest portion of Earth’s atmosphere It contains approximately 75% of the atmosphere's mass and 99% of its water vapor.  The stratosphere is the second major layer of Earth’s atmosphere, and just above the troposphere, and below the mesosphere.  The Mesosphere is the layer of the Earth's atmosphere that is directly above the stratosphere and directly below the thermosphere.  The thermosphere is the biggest of all the layers of the earth's atmosphere directly above the mesosphere and directly below the exosphere. Within this layer, ultraviolet radiation causes ionization.ultraviolet radiationionization  The exosphere is the uppermost layer of the atmosphere