Plate tectonic
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
Pangaea existed this many millions of years ago
What is around 250 million years ago.
The thinnest layer of the Earth
What is the crust
There are ______________ main layers of the Earth.
What is four
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading
Created the Continental Drift Theory
Who is Alfred Wegener
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates.
The thickest layer of the Earth
What is the mantle.
What are four major plates
What is North American plate, South American plate, Eurasian Plate, Indoaustralia plate, African plate, Antarctica plate.
Evidence of matching animal fossils from two separate continents _____________________ and _____________________
What is Africa and South America.
States that youngest rocks of ocean floor are at divergin boundaries, moving outward
What is seafloor spreading
The rigid part of the Earth including the crust and the upper mantle.... it makes up the plates of the Earth.
What is the lithosphere
The two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
What causes the plates to move?
What is the cycles in the mantle.