1. Spheres of the Earth
By: Cade Venhuizen

2. Lithosphere Lithosphere is Greek for “rocky sphere”
The solid, outermost shell of a rocky planet
In Earth, the Lithosphere includes the crust and upper mantle
Is about 100 km. thick
Thickness dependent on age (older lithosphere is bigger)
Part magma

3. Lithosphere Lava from volcanoes forms into more lithosphere
Made up of many plates (plate tectonics)
Plates move 5 to 10 cm. a year and cause earthquakes
Some people believe that the whole world was part of the same land mass- separated through cracking of Earth’s crust (continental drift)

4. Hydrosphere
Known as “water sphere”, because it contains all of the Earth’s water
Consists of Earth’s oceans, glaciers, streams, and groundwater
Wind circulation drives surface current
Water Cycle: evaporation, condensation, precipitation, and collection
Water cycle keeps repeating on and on

5. Atmosphere
Layers of the Atmosphere are: Ionosphere, Mesosphere, Ozone Layer, Stratosphere, Tropopause, and the Troposphere (from top to bottom)
Functions: protects Earth from radiation from space and the sun’s rays
Protects Earth from rapid cooling at night and heating in the day
Reservoir for carbon dioxide and oxygen
Protects Earth from meteors
The closer you are to the Earth, the more pressure there is, because there is more gravity

6. Biosphere Contains: all habitats of life The life itself
Extends to upper areas of the Atmosphere where birds and insects can be found
Also to underwater caves where fish can be found
Extends to any place on Earth that any kind of animal can be found

7. Interaction of the Spheres
Examples: humans(biosphere) build a dam out of rock materials(Lithosphere). Lake filled with water(Hydrosphere). Water either sinks into ground(Lithosphere) or evaporates into air(Atmosphere)
Atmosphere gives oxygen to Biosphere
Plants(Biosphere) take carbon dioxide
from Atmosphere
Biosphere cannot exist without water(Hydrosphere)
People(Biosphere)use minerals(Lithosphere) for many things

8. I Hope That You Enjoyed My PowerPoint Presentation…
Have A Nice Day!