A
The process by which oceanic crust sinks beneath a deep ocean trench and then and back into the mantle at a convergent plate boundry
Subduction
A plate boundary where two plates move away from each other
Divergent
A plate boundary where two plates move toward each other
Convergent
A plate boundary where two plates move past each other in opposite directions:
Transform
A break in earths crust along where rocks move
Fault
The shaking that results from the movement of of rock beneath earths surface
Earthquake
The measurement of an earthquakes strength based on seismic waves and movement along faults
Magnitude
A giant wave usually caused by an earthquake beneath the ocean floor
Tsunami
A weak spot in the crust where magma has come to the surface:
Volcano
A molten mixture of rock forming substances, gases, and water from the mantle
Magma
Liquid magma that reaches the surface
Lava
Idea that continents slowly moved over Earth's surface
Continental Drift
The supercontinent that existed on earth 300 million years ago
Pangea
Sections that fit together along cracks in the lithosphere
Tectonic Plates
The point on the surface of Earth above the focus of an earthquake
Epicenter
An instrument that records and measures seismic waves
Seismograph
A volcanic belt formed by the many volcanoes that rim the Pacific Ocean
Ring of fire
Wegener proposed that all the continents were once part of a supercontinent called (blank).
Pangea
A trace of an ancient organism that has been preserved in rock.
Fossils
What are the three main types of rocks?
Which rock type forms from cooled magma or lava?
Igneous
Which rock type forms from layers of sediment pressed together?
Sedimentary
Which rock type forms when heat and pressure change existing rock?
Metamorphic
Which rock often contains fossils?
Sedimentary
Who was the German scientist that studied whether Earth's continents move?
Alfred Wegener