Layers of the Earth

Question 1

Outermost and thinnest layer of the earth

Answer 1

Crust

Question 2

5-70 km thick

Answer 2

Crust

Question 3

Granitic rocks (silica and magnesium)

Answer 3

Continental Crust

Question 4

Basaltic rocks (silica and iron)

Answer 4

Oceanic Crust

Question 5

Thickest layer of the earth

Answer 5

Mantle

Question 6

How much does mantle take up the earth’s mass?

Answer 6

80%

Question 7

Solid rock

Answer 7

Upper Mantle

Question 8

Semi-solid rock

Answer 8

Lower Mantle

Question 9

3700-6000 degrees celsius

Answer 9

Core

Question 10

very dense center of our planet

Answer 10

Core

Question 11

ONLY liquid layer

Answer 11

Outer Core

Question 12

controls the earth’s magnetic field

Answer 12

Outer Core

Question 13

2270 km thick

Answer 13

Outer Core

Question 14

SOLID nickel and iron

Answer 14

Inner Core

Question 15

rigid and outermost layer of the earth

Answer 15

Lithosphere

Question 16

includes crust and uppermost part of the mantle

Answer 16

Lithosphere

Question 17

contains major and minor blocks of rocks

Answer 17

Tectonic Plates

Question 18

brittle and rigid, and easily deform under stress

Answer 18

Lithosphere

Question 19

semi liquid part of the mantle

Answer 19

Asthenosphere

Question 20

easily deformed under heat

Answer 20

Asthenosphere

Question 21

circulation of heat in the mantle

Answer 21

Convection Current

Question 22

transfer heat from lower region to higher region

Answer 22

Convection Current

Question 23

large slab of rocks

Answer 23

Tectonic Plates

Question 24

2 crust meet

Answer 24

Conrad Discontinuity

Question 25

Crust and Upper Mantle

Answer 25

Moho Discontinuity

Question 26

Upper Mantle and Lower Mantle

Answer 26

Repetti Discontinuity

Question 27

Lower Mantle and Outer Core

Answer 27

Guttensburg Discontinuity

Question 28

Outer Core and Inner Core

Answer 28

Lehmann Discontinuity