Lesson 2: Earth Structure

Question 1

Mainly iron

Answer 1

Core

Question 2

Even though the inner core is hotter than the
outer core, it remains solid due to
the _________

Answer 2

Pressure it experiences

Question 3

Comprised of Iron and Magnesium Silicate minerals

Answer 3

Mantle

Question 4

A big part of the mantle is solid rock (starting outside the outer core) but it is _____ in nature such that it can flow gradually

Answer 4

Plastic

Question 5

partially molten layer of the mantle

Answer 5

Astenosphere

Question 6

Rigid layer of the mantle

Answer 6

Rigid Mantle

Question 7

Mainly Granite and Basalt

Answer 7

Crust

Question 8

95% igneous and metamorphic rock with the remaining being sedimentary rock.

Answer 8

Crust

Question 9

in the crust, the sedimentary rock is dominated by

Answer 9

Mudstone

Question 10

Crust + Rigid outermost Mantle

Answer 10

Litosphere

Question 11

Type of division : contents/composition of

each layer

Answer 11

Chemical

Question 12

Type of division :state of each layer

Answer 12

Mechanical

Question 13

Crust

Answer 13

Chemical

Question 14

Mantle

Answer 14

Chemical

Question 15

Core

Answer 15

Chemical

Question 16

Litosphere

Answer 16

Mechanical

Question 17

Asthenosphere

Answer 17

Mechanical

Question 18

Inner core

Answer 18

Mechanical

Question 19

Outer Core

Answer 19

Mechanical

Question 20

Mesosphere

Answer 20

Mechanical

Question 21

The layer surrounding the outer core that is relatively solid compared to the layer above

Answer 21

Mesosphere

Question 22

Volume of core

Answer 22

16.1%

Question 23

volume of mantle

Answer 23

82.5%

Question 24

Volume of crust

Answer 24

1.4%

Question 25

the way temperature increase as one goes deeper into the Earth

Answer 25

Geothermal Gradient

Question 26

Temperature increase with depth: ______ from surface to center of core.

Answer 26

0⁰C to ~7000⁰C

Question 27

The rate of increase is _ for every km while in the crust.

Answer 27

30⁰C

Question 28

heat tends to transfer from _ to _

Answer 28

an area of higher temperature , an area of lower temperature

Question 29

heat transfer creates _ in the mantle

Answer 29

convection cells

Question 30

New Lithosphere forms

Answer 30

Upward

Question 31

Plates diverge

Answer 31

Upward

Question 32

One plate subducts into the mantle beneath the other

Answer 32

Downward

Question 33

Plates converge

Answer 33

Downward