Boundaries
the boundary between 2 tectonic plates where they move toward one another
Convergent Boundary
The crust of the earth that lays beneath the oceans
Oceanic Crust
The movement of the continental plates caused by convection currents in the Earth’s mantle
Continental drift
What happens to 2 pieces of continental crust that collide?
They crumple up to form mountains
At one time all the continents formed one giant continent called
Pangea
The boundary between 2 tectonic plates where they move away from one another
Divergent Boundary
The crust of the earth on land
Continental Crust
A divergent plate boundary where 2 continental plates move away from one another creating a valley that is usually filled in with water.
Rift
What happens when an oceanic crust and a continental crust collide?
The oceanic crust dives beneath the continental crust and is melted in the mantle
One piece of evidence that all the continents were once together as one continent is…
-They fit together like puzzle pieces
- There are fossils of the same type on different continents
The boundary between 2 tectonic plates where they slide past one another
Transform Boundary
The lithosphere is broken up into these different pieces
Tectonic Plates
A convergent plate boundary where 2 continental plates converge and push each other up to form mountains
Mountain Building
Volcanoes often appear near a subduction zone because
The oceanic plates is melting in the mantle
At what speed do tectonic plates move?
About the same speed as your fingernails grow
Earthquakes are most common at this type of plate boundary
Convergent plate boundary
The layer of the earth’s interior that makes up the continental plates
Lithosphere
a divergent plate boundary where 2 oceanic plates move away from one another and magma from the mantle rises to create new sea floor
Seafloor Spreading
At a transform boundary large earthquakes often occur, why?
The edges of the plates are jagged, they catch and tension builds up until it is released all at once.
This mountain range was created when the Indian continent collided with the Asian continent
The Himalayas
The most powerful Earthquakes happen at this kind of plate boundary
Transform Boundary
the movement of the Earth’s mantle that causes the continental plates to move
Convection Currents
A convergent boundary where oceanic crust slides beneath continental crust and turns to magma in the mantle
Subduction Zone
At the mid-oceanic ridge 2 pieces of oceanic crust are moving away from one another. What causes new seafloor to be created here?
Magma from the mantle comes up to fill in the gap between the 2 oceanic plates
What is the term that is used where a transform plate boundary causes earthquakes
falt