Plate Tectonics

Question 1

What did scientist think about the cracks in the earth ?

Answer 1

Thought it was because it was due to shrinking of the earth

Question 2

What is the earth made of outer to inner?

Answer 2

1) Crust
2) Mantle
3) Core

Question 3

What was Alfred Wegener theory?

Answer 3

Continental drift

Question 4

What was the theory of congenial drift?

Answer 4

That all of the contents where once all together as one piece of land

Question 5

What was Alfred’s evidence?

Answer 5

The contents fit
Rock types
Fossils were identical

Question 6

What happen in the core?

Answer 6

Radioactive processes that produce heat which is transferred to the mantle

Question 7

What is the mantle?

Answer 7

A very very thick liquid

Question 8

How does a tectonic plate split?

Answer 8

Because of a convection current due to the core giving of heat from producing radioactive processes rises through the mantle and it start to become less dense and falls

Question 9

What happens when plates start to move?

Answer 9

1) mountains form
2) earthquakes (plates sliding)
3) Volcanoes

Question 10

What is the problem with volcanoes and earthquakes for scientists?

Answer 10

Very hard to predict when they are going to happen