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1-2. FORMATION & EVOLUTION OF The Earth

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Presentation on theme: "1-2. FORMATION & EVOLUTION OF The Earth"— Presentation transcript:

1 1-2. FORMATION & EVOLUTION OF The Earth

2 The Physical Characteristics of the Earth
Distance to the SUN: 149,6000,000 km Diameter: 12,756 km Mass: 5.98*1027 g Density: 2-3g /cm3 (Crust), 5.52g/cm3 (Bulk) Elemental abundance: Bulk: Fe > O > Si > Mg > Ni > Ca > Al > S Crust: O > Si > Al > Fe > Ca > Na > K > Mg Atmosphere: N > O > Ar > C > H

3 Internal structure of the Earth.

4 Key Questions How did it start to aggregate?
What were the heat sources for the reconstitution (to have such an concentric internal structure)? Where did the atmosphere and water (volatiles) come from? How did the life begin and bring the changes of the environment?

5 Formation & Evolution of the Earth

6

7 Collison between Theia & Protoearth

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