Composition of Earth

Question 1

layers of the Earth

Answer 1

crust - mantle - outer core - inner core

Question 2

composition

Answer 2

earth’s layers are made up of different mixtures of elements

Question 3

physical properties (examples)

Answer 3

temperature, density and viscosity

Question 4

ability to flow

Answer 4

viscosity

Question 5

what makes up the outermost layer

Answer 5

lightest materials

Question 6

what usually makes up the inner layer

Answer 6

more dense materials

Question 7

outermost layer

Answer 7

crust

Question 8

how thick is the crust

Answer 8

5-100 km thick

Question 9

thinnest layer

Answer 9

crust

Question 10

what percentage of the Earth’s mass makes up crust

Answer 10

1%

Question 11

temperature range of crust

Answer 11

20 degree celsius to 870 degree celsius

Question 12

2 layers of crust

Answer 12

oceanic crust and continental crust

Question 13

what is the top layer of crust made of

Answer 13

granite

Question 14

what is the bottom layer of crust made up

Answer 14

basalt

Question 15

continental crust

Answer 15

makes up Earth’s continent

thickest layer of Earth’s crust

least dense

composition similar to GRANITE

Question 16

oceanic

Answer 16

makes up the ocean floor

not as thick as the continental crust

more dense than continental

composition similar to basalt

Question 17

layer of the earth beneath the crust

Answer 17

mantle

Question 18

what is the mass of mantle

Answer 18

67%

Question 19

what is the top boundary of mantle

Answer 19

moho

Question 20

what is the center of the mantle like

Answer 20

rock is viscous, it flows like a syrup

Question 21

what is mantle made up of

Answer 21

mostly iron and magnesium

Question 22

temperature range of mantle

Answer 22

870 degree celsius and 2200 degree celsius

Question 23

extends from the bottom of the mantle to the center of the earth

Answer 23

core

Question 24

mass of core

Answer 24

33%

Question 25

parts of the core

Answer 25

liquid outer core and solid inner core

Question 26

what planet is the same as the diameter of earth’s core

Answer 26

diameter of mars

Question 27

responsible for earth’s magnetic field

Answer 27

core

Question 28

temperature range

Answer 28

2200 degree celsius to 5000 degree celsius

Question 29

compositional layers

Answer 29

continental crust and oceanic crust

Question 30

mechanical layers

Answer 30

lithosphere - asthenosphere - mesosphere - outer core - inner core

Question 31

outermost, rigid layer of earth (mechanical layer)

Answer 31

lithosphere

Question 32

2 parts of lithosphere

Answer 32

crust and moho

Question 33

divided into pieces called tectonic plates

Answer 33

lithosphere

Question 34

soft layer of the mantle on which litospheric plates move

Answer 34

asthenosphere

Question 35

made up of solid rock like putty that grows slowly like fingernail

Answer 35

asthenosphere

Question 36

strong, lower part of mantle (mechanical layer); middle layer

Answer 36

mesosphere

Question 37

extends to the earth’s core

Answer 37

mesosphere

Question 38

extends from bottom of mantle and surrounds inner core

Answer 38

outer core

Question 39

how thick is the outer core

Answer 39

2270km thick

Question 40

what’s the outer core made up of

Answer 40

liquid iron and nickle

Question 41

how thick is the inner core

Answer 41

1216 thick

Question 42

solid due to pressure from upper layers

Answer 42

inner core

Question 43

what is the composition of inner core

Answer 43

iron

Question 44

hotter than the sun

Answer 44

inner core

Question 45

discontinuity between crust and mantle

Answer 45

mohorovicc

Question 46

discontinuity between upper and lower mantle

Answer 46

repiti

Question 47

discontinuity between lower mantle and outer core

Answer 47

guttenberg

Question 48

discontinuity between outer core and inner core

Answer 48

lehmann