layers of the earth

Question 1

a rigid layer that can break under stress

Answer 1

LITHOSPHERE

Question 2

Uppermost part of the mantle

Answer 2

LITHOSPHERE

Question 3

Lithosphere is broken into large and small sections called -

Answer 3

TECTONIC PLATES

Question 4

interact and create the tectonic activities on earth

Answer 4

TECTONIC PLATES

Question 5

below the lithosphere

Answer 5

ASTHENOSPHERE

Question 6

180 km thick

Answer 6

ASTHENOSPHERE

Question 7

contains hot molten rocks or magma

Answer 7

ASTHENOSPHERE

Question 8

can deform and reshape as a result of the hot molten mantle

Answer 8

ASTHENOSPHERE

Question 9

outermost layer of the earth

Answer 9

CRUST

Question 10

what part of crust is 40-70 km thick

Answer 10

CONTINENTAL CRUST

Question 11

Continental crust is made up of -

Answer 11

LIGHT GRANITIC ROCKS

Question 12

what part if crust is 7-10 km thick

Answer 12

OCEANIC CRUST

Question 13

Oceanic Crust is composed of

Answer 13

dense basaltic rocks

Question 14

layer of mantle that consists of hot rock of tar-like consistency which slowly moves

Answer 14

ASTHENOSPHERE

Question 15

the semi-rigid part of the middle mantle

Answer 15

ASTHENOSPHERE

Question 16

thinnest layer of the earth

Answer 16

CRUST

Question 17

a semi solid, rocky, very hot layer

Answer 17

MANTLE

Question 18

this layer is about 2900km thick

Answer 18

MANTLE

Question 19

it makes up 80% of earth

Answer 19

MANTLE

Question 20

mantle is composed of

Answer 20

FERRO MAGNESIUM SILICATE ROCKS

Question 21

the temperature of the top layer of mantle is about

Answer 21

900C

Question 22

as we go deeper the mantle, the temperature is about

Answer 22

1000-3700C

Question 23

the only layer that is liquid

Answer 23

OUTER CORE

Question 24

outer core is made up of -

Answer 24

MOLTEN NICKEL AND IRON

Question 25

about 2270 km thick and 3700C - 4300C

Answer 25

OUTER CORE

Question 26

this layer has the diameter of 1220

Answer 26

INNER CORE

Question 27

Inner core is composed of - and with the temp of 6000C

Answer 27

SOLID IRON

Question 28

solid innermost layer

Answer 28

INNER CORE

Question 29

interface between crust and upper mantle

Answer 29

MOHOROVICIC DISCONTINUITY

Question 30

Mohorovicic Discontinuity was recognized by the Croatian seismologist - in 1909

Answer 30

ANDRIJA MOHOROVICIC

Question 31

marks the boundary of the lower mantle and outer core

Answer 31

GUTENBERG DISCONTINUITY

Question 32

Gutenberg Discontinuity was named after the american seismologist -

Answer 32

BENO GUTENBERG

Question 33

located between the outer core and inner core

Answer 33

LEHMANN DISCONTINUITY

Question 34

Lehmann DIscontinuity was named after the danish seismologist -

Answer 34

INGE LEHMANN

Question 35

greek word “pan” means

Answer 35

ALL

Question 36

greek word “gaea” means

Answer 36

EARTH

Question 37

pangaea means

Answer 37

ALL OF EARTH / ALL LANDS

Question 38

vast sea or superocean

Answer 38

PANTHALASSA

Question 39

PANTHALASSA means

Answer 39

ALL SEAS

Question 40

this theory suggests that all geographical features is the results of the contraction and wrinkling of the planet as it cooled down

Answer 40

CONTRACTION THEORY