1. What makes up Earth’s Sphere’s?
Composition of Earth
What makes up Earth’s Sphere’s?

3. Why is Earth Unique?
3rd planet from the sun-perfect for supporting life-biosphere
Is covered by a blanket of gases-atmosphere
Is covered by water- hydrosphere
Has polar ice caps-cryosphere
Solid ground-geosphere (lithosphere)

4. The Atmosphere Thin blanket of gases that surround the earth
Consists of layers divided according to temperature
Consists of water vapor,oxygen, nitrogen, argon and other gases

5. Structure of Earth’s Atmosphere

6. Earth’s Atmosphere according to temperature variations

7. More on the Atmosphere
The study of the condition of the atmosphere is known as meterology
Gases thin out with altitude
Ozone or O3 is found in the stratosphere
Ozone filters harmful ultraviolet rays from the sun
The hole in the ozone found over polar ice caps is monitored closely by scientists

8. The Hydrosphere

9. Hydrosphere All the water that covers the earth
Consists of liquid water, dissolved salts, including sodium chloride and many others.
3% fresh, 97% oceanic
Two common resources from ocean water are table salt, and magnesium
Study of oceans is called oceanography
Sources of salt: weathered rock, volcanoes, and decaying marine organisms
Salinity, temperature, light intensity of ocean varies with depth

10. The Geosphere

11. Geosphere Consists of solid rock Is constantly changing
Wears down by weathering and erosion
Builds up by crustal activity, volcanic eruptions, mountain building etc
Compound that form the rock come from within the earth in magma (igneous rock)

12. The Crysosphere

13. The Cryosphere All the ice or frozen waters Moves Glacier
Found at polar ice caps and high altitudes