The Plate Tectonic Theory Crossword

The strong outter layer
A theory first proposed by scientist Alfred Wegener in 1912
continents were once joined together in an_______
wider land connection between otherwise separate areas
a freshwater reptile found only South America and Africa during the Permian period
gaps between tectonic plates that mantle the Earth like seams on a baseball
As the continents jostle around the Earth, they occasionally come together to form giant
_____ geologic terms means a large slab of solid rock.
the Greek root for "to build"
The theory wasfirst developed in the early 20th century by this meteorologist
a single supercontinent is called
secondary driving force for the movement of the Earth's tectonic plates
any sudden shaking of the ground caused by the passage of__
He used moving into the Asian continent to form the Himalayas as an example.
The __ is the outermost layer of the earth
The ___ is primarily a mixture of iron and nickel metal
A number of methods have been used to date
The most reliable method (2005) relates to the detection of tiny crystals called
Scientists now understand that over millenia the Earth's __ flieds
As __ reaches the lithosphere, fresh ocean crust is formed