Structures of Earth

Question 1

what are the 3 layers the earth is made up of?

Answer 1

1) the crust
2) the mantle
3) the core

Question 2

what does the crust consist of?

Answer 2

it’s made up of granite, basalt, gabbrro and other types of rock

Question 3

what s the mantle made up of?

Answer 3

It consists of silica and metal-rich minerals

Question 4

what are the 2 layers of the core?

Answer 4

the inner core - made mostly of iron

the outer core - made mostly of liquid

Question 5

what are the 3 types of plate margins?

Answer 5

1) constructive margin
2) destructive margin
3) conservative margin

Question 6

explain the constructive margin?

Answer 6

when 2 plates are moving apart and new crust is forming. molten material from the mantle wells up in the space between the plate, hardens and forms new crust.

Question 7

explain the destructive margin?

Answer 7

When 2 plates are colliding and crust is being destroyed. When 2 plates consisting of an oceanic and a continental, the oceanic may be forced under the other plate.

Question 8

explain the conservative margin?

Answer 8

when 2 plates are sliding by one another, and no crust is created or destroyed.

Question 9

what is the theory of pangea?

Answer 9

that a single continent named pangea existed about 250 million years ago, it gradually broke apart and over millions of years the pieces drifted into the locations they are in today.