Internal Structure Of The Earth

Question 1

How do we know the internal structure of the earth

Answer 1

Calculations based on:
-How the different earthquake (seismic) waves travel through the solid and liquid layers of the earth
-The mineral composition is known from the studies of lava and other scientific calculations

Question 2

Name all the layers of the earth
Hint:
C
L
A
M
O
I
c

Answer 2

Crust
Lithosphere
Asthenosphere
Mantle
Outer core
Inner core
Core

Question 3

What are the inner cores characteristics

Answer 3

Solid - consists of iron
Radioactive
Hottest part (6000 degrees)

Question 4

What are the outer core’s characteristics

Answer 4

Semi liquid which is made from iron and nickel
It’s around 4500-6000 degrees

Question 5

The mantles characteristic

Answer 5

Widest layer
Around 4500 degrees
Upper part is solid below is semi molten (forms asthenosphere)

Question 6

The crust characteristics

Answer 6

Forms the outer shell of the earth

Question 7

What are the two types of crust

Answer 7

Oceanic - a thin, dense layer (6-10km), which lines the ocean floor

Continental- an older, thicker layer (usually 45-50km thick), which makes up the earths landmasses. It is less dense than oceanic crust

Question 8

What’s the lithosphere

Answer 8

The solid layer from which tectonic plates are formed