Science

Question 1

• The outer layer of the Earth.

Answer 1

The Crust

Question 2

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

Answer 2

The Crust

Question 3

TMade up of both continental and oceanic, The continental crust is 8-km thick beneath the land and 32km thick beneath the oceans.

Answer 3

The Crust

Question 4

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

Answer 4

SiMa

Question 5

Thicker and older than Oceanic crust, And ___ is abundant in continental crust. Mostly Granite (Granatic rock)

Answer 5

(SiAl)

Question 6

The _____ is composed of the crust and the upper part of the mantle. The rock in this layer is stronger and more rigid.

Answer 6

Lithosphere

Question 7

.

is divided into several segment called Tectonic plate.

Answer 7

Lithosphere

Question 8

is the part of the mantle underneath the lithosphere.

Answer 8

asthenosphere

Question 9

, from the Greek word asthenes meaning “weak”.

Answer 9

asthenosphere

Question 10

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

Answer 10

asthenosphere

Question 11

Discovered by Andrija Mohorovicic, 1909

Answer 11

Mantle

Question 12

is responsible for many geological activities

Answer 12

Mantle

Question 13

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

Answer 13

mantle

Question 14

It is made of partially molten mixture/ minerals of silicate minerals and cover 84% of the Earths volume.

Answer 14

mantle

Question 15

It includes the lithosphere and asthenosphere.

Answer 15

mantle

Question 16

It is very hot 1600°F at the top and 4000°F towards the center of the Earth.

Answer 16

mantle

Question 17

core of the Earth is like a ball of very hot metals. And it is responsible for the generation of

Answer 17

Earths magnetic field

Question 18

The core is divided into 2 layers-

Answer 18

Outer and Inner.

Question 19

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 19

core

Question 20

• Discovered by Inge Lemann 1936.

Answer 20

The Inner Core

Question 21

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

Answer 21

The Inner Core

Question 22

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

Answer 22

The Inner Core

Question 23

is solid iron in a center of the Earth. And has a radius of about 1216 km.

Answer 23

The inner core

Question 24

The rock in this layer are rigid but not brittle.

Answer 24

The inner core

Question 25

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

Answer 25

The outer core