Internal Structure of the Earth

Question 1

The outer layer of the Earth

Answer 1

Crust

Question 2

It is a very thin layer of solid rock. It is the thinnest layer of the Earth. Covers about 0.8% of Earth’s Volume

Answer 2

crust

Question 3

is abundant in oceanic crust. (Its younger or newer) Mostly Basalt (Basaltic rock)

Answer 3

(SiMa)

Question 4

is abundant in continental crust.Mostly Granite (Granatic rock)

Answer 4

(SiAl)

Question 4

is composed of the crust and the upper part of the mantle.

Answer 4

lithosphere

Question 5

is divided into several segment called Tectonic plate.

Answer 5

lithosphere

Question 6

is the part of the mantle underneath the lithosphere.

Answer 6

asthenosphere

Question 7

*asthenosphere, from the Greek word ____ meaning “weak”.

Answer 7

asthenes

Question 8

The rock in this layer is stronger and more rigid.

Answer 8

lithosphere

Question 9

It is made of molten rock and metal so that it “flows” like hot asphalt.

Answer 9

asthenosphere

Question 10

It includes the lithosphere and asthenosphere.

Answer 10

Mantle

Question 10

the mantle is discovered by

Answer 10

Andrija Mohorovicic, 1909

Question 11

is responsible for many geological activities

Answer 11

mantle

Question 12

is the largest layer of the Earth. It is 2900km thick.

Answer 12

Mantle

Question 13

is like a ball of very hot metals. And it is responsible for the generation of Earths magnetic field

Answer 13

core

Question 14

is so hot and has so much pressure that if you were to go there—you would be squished into something even smaller than a marble

Answer 14

core

Question 15

is a type of seismic wave. it causes shaking of the ground perpendicular to the direction of the wave. it does not propagate on liquid with very low viscoty

Answer 15

shear wave

Question 16

It is composed of iron and nickel. It is responsible for the magnetic field of the Earth generates.

Answer 16

inner core

Question 17

The temperature gradient in this layer is believed to be higher than sun’s surface.

Answer 17

inner core

Question 18

is solid iron in a center of the Earth.

Answer 18

inner core

Question 19

Where the information from the inner core came from?

Answer 19

seismic wave

Question 20

The rock in this layer are rigid but not brittle.

Answer 20

inner core

Question 21

who discovered the outer core

Answer 21

Beno Gutenberg, 1913

Question 22

liquid metal consist of mainly iron and nickel with 10% uranium and oxygen.

Answer 22

outer core

Question 22

how thick is the outer core

Answer 22

2,250km

Question 23

helps to protect our planet from cosmic radiation and from the particles emitted by the sun

Answer 23

earth’s magnetic field

Question 24

is divided into four main layers.

Answer 24

earth

Question 25

the inner core is discovered by

Answer 25

Inge Lemann 1936