INTERIOR OF EARTH

Question 1

MAGNETISM OF EARTH IS CAUSED BY?

Answer 1

CONVECTIONAL CURRENTS IN OUTER CORE.

Question 2

EPICENTER

Answer 2

ON THE SURFACE

Question 3

HYPOCENTRE

Answer 3

INSIDE THE EARTH

Question 4

P WAVES

Answer 4

LONGITUDINAL (COMPRESSIONAL/PRESSURE WAVES)
CAN TRAVEL IN ALL MEDIUM

Question 5

S WAVES

Answer 5

TRANSVERSE (SHEAR/ DISTORTIONAL WAVES)
ONLY TRAVEL THROUGH SOLID

Question 6

SURFACE WAVES

Answer 6

LOW FREQUENCY TRANSVERSE WAVES

Question 7

SHADOW ZONE OF P WAVES

Answer 7

105 - 145

Question 8

SHADOW ZONE OF S WAVES

Answer 8

105 - 105

Question 9

AVERAGE DENSITY OF CRUST

Answer 9

2.7G/CM3

Question 10

MOST ABUNDANT ELEMENTS ON EARTH’S CRUST

Answer 10

OS CIA

Question 11

MOST ABUNDANT ELEMENTS ON EARTH

Answer 11

iOS

Question 12

LITHOSPHERE

Answer 12

CRUST + UPPER PORTION OF MANTLE (10 - 200 km)

Question 13

MANTLE

Answer 13

67% OF TOTAL MASS AND 83% OF TOTAL VOLUME
COMPOSED OF SILICATE ROCKS THAT ARE RICH IN Fe and Mg

Question 14

DENSITY OF UPPER MANTLE

Answer 14

2.9 - 3.3 G/CM3

Question 15

DENSITY OF LOWER MANTLE

Answer 15

3.3 - 5.7 G/CM3

Question 16

ASTHENOSPHERE

Answer 16

EXTENDING UPTO 80 - 200KM
UPPER PORTION OF THE MANTLE

Question 17

OUTER CORE

Answer 17

BETWEEN 2900 - 5100 KM
NIFE
LIQUID

Question 18

DENSITY OF OUTER CORE

Answer 18

9.9 - 12.2G/CM3

Question 19

EARTH’S MAGNETIC FIELD

Answer 19

CC IN OUTER CORE + CORIOLIS EFFECT

Question 20

INNER CORE

Answer 20

PRMARILY IRON + NICAL
16% VOLUME & 33% OF THE MASS

Question 21

DENSITY OF INNER CORE

Answer 21

12.6 - 13G/CM3

Question 22

CRUST EXTENSION

Answer 22

0 - 70 KM
(OUTER CRUST : 0 - 35KM)
INNER CRUST: 35 - 70KM)

Question 23

MANTLE EXTENSION

Answer 23

70 - 2900 KM
(OUTER MANTLE: 70 - 700KM)
(INNER MANTLE: 700 - 2900KM)

Question 24

CORE EXTENSION

Answer 24

2900 - 6371 KM
(OUTER CORE: 2900- 5100KM)
(INNER CORE: 5100-6400 KM)

Question 25

REPITI DISCONTIUITY

Answer 25

UPPER MATLE & LOWER MANTLE

Question 26

GUTTENBERG DISCONTINUITY

Answer 26

LOWER MANTLE & OUTER CORE

Question 27

CONORD DISCONTINUITY

Answer 27

UPPER CRUST & LOWER CRUST

Question 28

MOHO DISCONTINUITY

Answer 28

LOWER CRUST & UPPER MANTLE

Question 29

LEHMAN DISCONTINUITY

Answer 29

OUTER CORE & INNER CORE

Question 30

AVERAGE DENSITY OF EARTH

Answer 30

5.51 G/CM3