Structure Of The Earth

Question 1

How many layers if earth made of

Answer 1

4 distinct layers

Question 2

Name the 4 layers

Answer 2

Inner core
Outer core
Mantle
Crust

Question 3

What is the inner core

Answer 3

Centre and hottest part of earth

Immense heat energy

Question 4

What is inner core made of

Answer 4

Solid iron and nickel

Temperature up to 5,000c

Question 5

What is outer core

Answer 5

Layer surrounding inner core
Extremely hot
Temperatures similar to inner core

Question 6

What is outer core made of

Answer 6

Liquid layer made of iron and nickel

Question 7

What is mantle

Answer 7

Widest section of earth

Question 8

Mantle diameter?

Answer 8

Approximately 2,900km

Question 9

What is mantle made of

Answer 9

Semi-molten rock named molten

Question 10

What is there in upper part of mantle

Answer 10

Hard rock

Question 11

What is there in lower part of mantle

Answer 11

Rock is soft and begins to melt

Question 12

What is crust

Answer 12

Outer layer of earth
Thin layer between 0-60km thick
Solid layer in which we live upon

Question 13

2 types of crust

Answer 13

Continental

Oceanic

Question 14

What does continental crust carry

Answer 14

Land

Question 15

What does oceanic crust carry

Answer 15

Ocean

Question 16

Describe layers of earth

Answer 16

Inner core-middle of earth
Outer core-surrounds inner core
Mantle-widest layer around outer core
Crust-thick crust we live on

Question 17

How many large tectonic plates does earth consist of

Answer 17

7 and several smaller ones

Question 18

Why is earths crust unstable

Answer 18

Plates are moving in response to convection currents in mantle