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1.1 Lithosphere Place of Earth in the Solar System, (4.MANTLE (1.BETWEEN…
1.1 Lithosphere Place of Earth in the Solar System,
1.PLACE OF EARTH BASICS
1.FIFTH LARGEST
2.GEIOD SHAPE
3.CONDITIONS FAV TO SUPPORT LIFE
4.NEITHER TOO HOT NOR TOO COLD
5.WATER , AIR
6.LIFE SUPPORT OXYGEN
7.APPEARS BLUE 2/3 WATER
2.EARTH INTERIOR
1.DIRECT SOURCES: ROCKS MINING, VOLCANIC ERUPTIONS
2.INDIRECT SOURCES
1.CHANGES IN TEMP, PRESSURE WHEN GO DEEPTOWARDS INTERIOR
2.METEORS
3.GRAVITATION..NEAR POLES , EQUATOR
4.GRAVITY ANAMOLY: CHANGE IN GRAVITY: CHANGE IN MASS
5.SEISMIC WAVES: SHADOW ZONES; MATERIALS INSIDE
6.MAGNETIC SOUURCES
3.CORE:
1.INNERMOST
2.SEPERATED FROM MANTLE BY GUTENBERG'S DISCONTINUITY
3.NI,FE
4.15 % EARTH VOLUME, 32.5% MASS
5.DENSEST--9.5 TO 14.5 GM/CUBIC CM
6.TWO SUB LAYERS
1.INNER: SOLID
2.OUTER: LIQUID, SEMI LIQUID
3.DISCONTINUITY : LEHMAN DISCONTINUITY BETWEEN THEM
7.ALSO CALLED BARYSPHERE.
4.MANTLE
1.BETWEEN CORE N CRUST-
2.DISCONTINUITY BN CRUST N MANTLE MOHOROVICH DISCONTINUITY
3.2900 KMS THICKNESS, 84 % VOLUME, 67 % MASS.
4.SI, MA
5.DENSITY 3.3 - 5.4 GM/CUBIC CM
6.ASTHENOSPHERE: UPPER REGION OF MANTLE(80-200 KMS), VISCOUS, DUCTILE, DEFORMING--SOURCE OF MAGMA, ON WHICH PLATES MOVE.
7.DISCONTINUITY BN UPPER N LOWER MANTLE IS ROSETTI DISCONTINUITY
8.AREA OTHER THAN ASTHENOSPHERE IS CALLED MESOSPHERE.
5.CRUST: BASICS:
1.OUTERMOST SOLID PART, 8-40 KMS THICKNESS, (OCEANIC- 5 KMS, CONTINENTAL-30 KMS) BRITTLE IN NATURE
2.1 % VOLUME, 0.5 % MASS
3.SI, AL
4.DENSITY: 3 GM/ CUBIC CM
5.DISCONTINUITY BN HYDROSPHERE N CRUST IS
CONRAD DISCONTINUITY.
6.MINERALS IN CRUST
1.MINERAL--ORGANIC/INORGANIC, ORDERLY ATOMIC STRUCTURE, DEFNT CHEMICAL COMPOSITION, PHYSICAL PROPERTIES
2.TWO R MORE ELEMENTS, SINGLE-AG, CU, GOLD ETC
3.SOURCE : HOT MAGMA
4.CONTAINS-METAL THEN METALLIC MINERALS-- PROFITABLE THEN ORES
5.2000 MINERALS, 6 ABUNDANT AND PROFITABLE VIZ, FELDSPER, QUARTZ, PYROXENES, AMPHIBOLES, MICA, OLIVINE
6.OXYGEN, SILICON, ALUMINIUM, IRON, CALCIUM, SODIUM, POTASSIUM, MAGNESIUM, OTHERS