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THE ORIGIN OF THE EARTH:
Nebular Theory:
4600 million years, when the Sun made a chemical reaction that created a nebula.

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THE ORIGIN OF THE EARTH:
Accretion Of Planetesimals:
In the nebula small particles started colliding and growing in size and this is the process that created the planets.

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CHARACTERISTICS (1):
crust: is composed of a great variety of igneous, metamorphic, and sedimentary rocks.
Lithosphere: includes the brittle upper portion of the mantle and the crust, from 50–100 km thick.
Mantle: mostly-solid bulk The mantle is about 2,900 kilometers thick.

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CHARACTERISTICS (2):
Athenosphere: at depths between approximately 80 and 200 km below the surface.

Core: The core is found about 2,900 kilometers below Earth's surface. The central or portion of the Earth, lying below the mantle and probably consisting of iron and nickel. It is divided into a liquid outer core,  and a solid inner core.

Inner Core:  a hot, dense ball of iron. the temperature in the inner core is about 5,200° Celsius.

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Minerals are solid, inorganic, natural materials. They have a definite chemical composition and usually have a crystalline structure.

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heterogeneity:  I think that this means that a mineral or a rock is composed by some different  minerals.
homogeneity: Taking into account my last awser this means that a roch or a mineral is only composed by one mineral, what means its only a mineral.

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CLASSIFICATION OF ROCKS:

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2.1 Relief:difference in elevation between any two points.

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3. INTERNAL AND EXTERNAL GEOLOGICAL PROCESSES

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3. INTERNAL AND EXTERNAL GEOLOGICAL PROCESSES

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3.1 Internal geological agents and processes: the Internal geological processes are drive by the heat  stored in the Earth's interior. They usually occur far from the surface. The main internal geological agent is the movement of the lithospheric plates.

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3. INTERNAL AND EXTERNAL GEOLOGICAL PROCESSES

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3. INTERNAL AND EXTERNAL GEOLOGICAL PROCESSES

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3.2 External geological agents and processes: this process affect the Earth's surface, and this processes are the ones that shape the relief that internal processes create.
Its main agents are water, wind, ice, atmosphere and human beings.

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Continental crust

Oceanic crust

continental rift

craton

mountain range

continental shelf

trench

abyssal plain

oceanic ridge

rift

slip faults

island arc

volcanoes

subduction.

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2.1 Landscape: all the visible features of an area of land.

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3.3 The engine of internal and external processes. Energy sources.

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3.3 The engine of internal and external processes. Energy sources.

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The Earth’s internal heat: he process by which Earth makes heat is called radioactive decay. Estimates of the total heat flow from Earth's interior to surface span a range of 43 to 49 terawatts.