layers of the earth

Question 1

what are the compositional layers of the earth?

Answer 1

crust, mantle, outer & inner core

Question 2

what are the mechanical layers of the earth?

Answer 2

lithosphere, asthenosphere, mesosphere, outer & inner core

Question 3

this drives the asthenosphere into plate motion

Answer 3

convection

Question 4

what is the inner core made of?

Answer 4

iron and nickel (in solid form)

Question 5

why is the inner core solid?

Answer 5

because of the pressure from outer core, mantle, and crust

Question 6

which of the following layers of the earth is entirely in liquid form?

Answer 6

outer core

Question 7

what is the outer core made of?

Answer 7

iron and nickel (in liquid form)

Question 8

what does the outer core generate?

Answer 8

the earth’s magnetic field

Question 9

which seismic wave will not pass through the outer core?

Answer 9

s-wave (secondary wave)

Question 10

which of the following processes, the movement of gas or liquid in which the warmer parts move up and the cooler parts move down?

Answer 10

convection

Question 11

this is the thickest layer closest to 3000 km

Answer 11

mantle

Question 12

the mantle is composed of?

Answer 12

mostly iron, magnesium, and silicon

Question 13

this is the rigid outer part of the earth, consisting of the crust and upper mantle

Answer 13

lithosphere

Question 14

which term is used to collectively refer to crust and upper mantle?

Answer 14

lithosphere

Question 15

this is made up of 8 elements (oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium)

Answer 15

crust

Question 16

it is extremely thin, cold and brittle compared to what lies below it

Answer 16

crust

Question 17

two kinds of crust

Answer 17

oceanic crust and continential crust

Question 18

this is five to ten kilometers thick

Answer 18

oceanic crust

Question 19

the outermost layer of earth’s lithosphere that makes up the planet’s continents

Answer 19

continential crust

Question 20

which of this solid layer of the earth can flow very slowly?

Answer 20

asthenosphere

Question 21

is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle

Answer 21

subduction

Question 22

are long, narrow depressions on the seafloor that form at the boundary of tectonic plates where one plate is pushed, or subducts, beneath another

Answer 22

trench

Question 23

this is 8 km thick and is 200-1000 degrees celsius

Answer 23

oceanic crust

Question 24

this is 32 km thick and is 200-1000 degrees celsius

Answer 24

continential crust

Question 25

this is 410 km thick and is 932-1652 degrees celsius

Answer 25

upper mantle

Question 26

this is 2180 km thick and is 4030-5730 degrees celsius

Answer 26

outer core

Question 27

this is 1220 km thick and is 5500 degrees celsius

Answer 27

inner core