convergent boundaries
this convergent boundary produces a trench with volcanic arcs that forms a chain of volcanoes along the edge of the continental plate. Hint: the trench is close to the continental crust.
oceanic-continental convergence boundary
Rock samples taken from ocean ridges are this when because the age of the oceanic crust increases with distance.
Younger than the mid-ocean ridge
The Earth's crust is divided into 17 major what that is the direct result of formations such as the ring of fire?
tectonic plates
when minerals found in magma outside a volcano start to cool they will eventually form this type of rock
Igneous
occurs when particles such as sand rub up against surfaces of rock breaking them down over time
abrasion
long after a continental-oceanic plate have converged, the edges of two continents will collide, forming a mountain range.
continental-continental convergence boundary
older oceanic crust is closer to this underwater landmass that creates mountain ranges and volcanoes. Ex: one of these is found in the middle of the Atlantic Ocean and shoots up all the way through the middle of Greenland.
mid-ocean ridge
This is a trail of volcanic active volcanoes on the floor of the Pacific Ocean
hot spots
This is the erupted material found outside of a volcano
Tephra
these are rocks that have shaped into an arc, pillar, pebble, or boulder by the erosion of windblown sediment
ventifact
this boundary is where two plates will slide horizontally past each other becoming offset such as the San Andrea's Fault. Creates a zigzag pattern between two plates.
Transform Boundary
When two plates spread apart in the seafloor, both sides will produce this that destroys newly formed oceanic crust.
Trench
This is a bowl shaped depression found outside the top of a volcano
crater
forms volcanic arcs or chains of volcanoes and a trench that is found farther out in the ocean
oceanic oceanic convergent boundary
the lowering of land surfaces as a direct result of wind removing those surface particles where dust storms usually occur
deflation
this boundary is found along the seafloor that produces rift valley and continuous mountain ranges.
Hint: the seafloor spreads apart at the mid ocean ridge about 6 cm per year.
Divergent boundary
This is the transfer of thermal energy by hotter magma rising up from the earth's crust and cooler magma sinking back into the earth's crust.
convection current
This is the most common gas found in magma
water vapor
This is what magma traps and builds up
gases and pressure
after ice has melted on a plain it sometimes will form a depression in the Earth filled with water
kettle lake
when two plates collide due to a convergent boundary, the denser plate will slide underneath the other in this process
subduction
These are lines formed along plate boundaries, fractures in the ground that occur where tectonic plates move and shift
Fault lines
magma with a high silica content tends to be this
thick and sticky
This type of magma has a higher viscosity and thickness
cooler
this is the result of glacial deposits deposited by melted water at the bottom of a glacier or mountainside
outwash plain