Plate Boundaries
What are the 3 types of plate boundaries?
Convergent plate boundaries, divergent plate boundaries, transform plate boundaries?
Who invented the concept of Pangea?
Alfred Wegener
How did Alfred Wegener discover Pangea?
He found that the continents fit together like puzzles pieces.
What are the land forms found at convergent and divergent plate boundaries?
Volcanoes, mid-ocean ridges, and trenches.
What are the four main layers of earth?
The crust, the mantle, the outer core, and the inner core.
What is famous transform plate boundary called?
The San Andres Fault.
How many years ago did Pangea start drifting apart?
200 million years
Who discovered the layers of the earth?
Isaac Newton
Where do a pattern volcanoes occur?
At plate boundary lines.
What is denser, the continental crust or the oceanic crust?
The oceanic crust.
What way do transform plate boundaries move?
They slide
What is the origin of the word Pangea?
It comes from the Greek word Pan (all) and the word Gia (Earth).
What did Harry Hess discover?
He discovered mid-ocean ridges were stored of underwater volcanoes.
What is a hotspot?
An isolated area with volcanic activity.
Liquid iron and nickel.
What is the largest plate?
The Pacific Plate
What are the two halves of Pangea called?
Laurasia (The northern half), and Gondwana (The southern half)
Who discovered the inner core?
Inge Lehmann
What are island arcs?
A chain of volcanoes on the edge of ocean trenches
Why does the inner core stay solid?
Pressure