There is a chain of volcanoes off the coast of Alaska, earthquakes are frequent in this area. What type of boundary is this on? What type of crusts are involved?
Convergent boundary, oceanic and continental crusts
What two plates need to interact for a mid-ocean ridge to form?
Oceanic and Oceanic
What is the theory of plate tectonics?
The theory that parts of the crust and upper mantle are broken into sections that can move and interact with each other to cause geologic events and structures.
At what boundary would you expect to see frequent earthquakes?
Transform Boundary
What two plates need to interact for a mountains to form?
Continental and Continental
What are the two types of crust?
Oceanic and Continental
At what type of boundary would you expect to find a mid-ocean ridge?
Divergent Boundary
Two oceanic plates collide, one slides under the other. What geologic event would this cause?
Oceanic Trench
Mid-Ocean Ridge
Continental Rift
Chain of Volcanoes
When two oceanic plates pull apart, what geological event or structure occurs?
chain of volcanoes
earthquakes
mid-ocean ridge
continental rift
When two continental plates pull apart what geologic event or structure occurs?
Oceanic Trench
Continental Rift
Volcanoes
Mid-ocean ridge
What two plates need to interact for a chain of volcanoes to form?
Continental and Oceanic
When two continental crusts collide what geological event forms?
Volcanoes
Trench
Ridge
Mountains
When two plates slide past each other what geological event occurs?
Volcanoes
Earthquakes
Mountains
Oceanic Trench
When two plates slide past each other
Transform Boundary
What is subduction?
When two plates collide and one goes under the other
When two plates collide into each other
Convergent Boundary
At what type of boundary would you expect to find mountains?
Convergent Boundary
A long time ago all the continents were connected, what was the name of this supercontinent?
Pangea
What is seafloor spreading?
When two oceanic plates pull apart, magma rises up and creates new crust. This happens over and over again causing the seafloor to get wider.
An oceanic crust and a continental crust collide, which plate will be sub-ducted and why?
The oceanic crust will subduct under the continental crust because it is more dense.
What are the 3 types of plate boundaries?
Convergent, Divergent and Transform
Who was the first person to introduce the idea of plate tectonics?
Isaac Newton
Charles Darwin
Alfred Wegener
Gregor Mendal
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