Natural disasters Flashcards
Which is the only liquid layer
The outer core
The crust is
The most outer layer and the thinnest. I
The mantle is
subdivided into 2 regions, upper and lower. It is made of hot semisolid rock
The outer core is
The only liquid later is a sea of mostly iron and nickel
The Inner core is
An extremely hot solid sphere of mostly iron and nickel at the centre of the earth
Who first started the theory that the continents were connected
Alfred Lothar Wegener
What was Alfred Lothar Wegeners theory
The reason the continents all looked like they could fit together was because they once were and got separated because of geological forces
The bending and crumpling of rocks is called
Folding
A syncline
a fold that bends downwards
An anticline
a fold that bends upwards.
A normal fault
the rocks on one side of the fault have dropped down, creating a sunken basin with a high sheer cliff face
A reverse fault
the rocks on one side of the fault have been pushed up over the rocks on the other side forming overhang mountains that have one very steep face.
3 types of faults
normal, reverse and transverse
Explain the Theory of Plate Tectonics
explains how major landforms are created as a result of Earth’s subterranean movements.
Describe what evidence can be used to support this theory of Plate Tectonics.
- Matching coastlines
- ## Fossil evidence
