Beneath the Crust
Types of Boundaries
Plate Tectonics
Movement of the Earth
Vocab
100
What is the order of the Earth's layers, starting from the surface?
crust, mantle, outer core, inner core
100
Earthquakes mostly occur at this type of plate boundary
transform
100
What type of feature might you see at this boundary?
earthquake
100
The process by which an oceanic plate slides beneath a continental or another ocean plate is known as
Subduction
100
The Ring of Fire, a highly active circle of volcanoes and earthquakes, is found on the border of which plate?
Pacific
200
The portion of the mantle just below the lithosphere of the earth
asthenosphere
200
Places where tectonic plates interact or are separated
boundaries
200
What plate is found at J
Eurasian
200
The _______________ plate is home to the Ring of Fire
Pacific
200
The Mid Atlantic Ridge is found under the ocean between which two sets of plates?
North American / Eurasian
and
South American/ African
300
In the mantle, heat is transferred as soft rock flows slowly in cycles known as ______________ which cause the plates to move
convection currents
300
When two plates move towards each other and collide it is a __________ boundary
convergent
300
The lithosphere is broken into sections called plates which float on top of the
asthenosphere
300
Hawaiian Islands were most likely formed by what feature?
volcanoes
300
Occur mostly at convergent boundaries often near subduction zones
volcanoes
400
The process by which molten material adds new ocean crust to the ocean floor at divergent boundaries (Harry Hess)
Sea Floor Spreading
400
When two plates move apart from each other it is called a ________________ boundary
divergent
400
What moves apart or together or side to side to form volcanoes and earthquakes?
tectonic plates
400
Deep ocean trenches like the Mariana Trench are formed by what 2 types of plates converging?
oceanic and continental OR oceanic and oceanic
400
Harry Hess's theory that Molten material adds new oceanic crust to the ocean floor is called _______________
sea floor spreading
500
Tectonic plates move approximately this far each year
one inch
500
Breaks in the crust (ex San Andreas in California) are called
faults
500
What plate is found at B?
Pacific
500
A collision between two pieces of continental crust at a convergent boundary produces what feature?
a mountain
500
long under water mountain found between the North American/Eurasian and the South American/African plates
Mid Atlantic Ridge