Plate Tectonics 1
The broken pieces of lithospere that are made to move round due to convection currents.
Tectonic Plates
The outermost layer of the Earth
Crust
New crust is created at this type of boundary.
divergent
This layer of the Earth is in the very center and is made of mostly iron.
The inner core
The layer of the Earth between the crust and the outer core (has two layers).
mantle
This layer of the Earth is made up of the asthenosphere and the lithosphere.
the mantle
The area where two tectonic plates meet
Plate Boundary
This often forms when a continental plate converges with a continental plate
Mountains
This type of boundary is made when two tectonic plates collide
Convergent
This type of plate boundary is the leading cause of earthquakes
The name for the pattern on a map made by graphing the location of most volcanoes on Earth.
The Ring of Fire
A boundary where two plates slide along each other
Transform
This type of boundary is made when two plates pull apart from each other
divergent boundary
The name for magma once it reaches the surface of the Earth
lava
The force from this causes the tectonic plates to move
convection currents
Most divergent plate boundaries occur here and create ridges. (think about where you saw the most ridges on the boundary map we did)
the ocean
The Earth's crust is broken up into ___ major tectonic plates.
7
Dense clouds of hot gasses and ash that erupt from volcanoes and destroy everything in their path.
Rift valleys occur at this type of plate boundry in the ocean and on land.
divergent
This type of volcano is steep and cone shaped.
Cinder cone
He developed the theory of continental drift
Alfred Wegner
This tool is used to measure the strength of earthquakes
seismograph
The deepest part of the ocean, The Mariana Trench, is formed by this type of plate boundary
convergent
When two plates meet at a congvergent boundary, which one will subduct?
The older, more dense plate
This word describes the action of one plate moving below another plate into the mantle
subduction
This type of volcano has layers of lava, ash and rock.
Composite
What are the 3 types of plate boundaries?
Transform
Divergent
Convergent
The name for the plate that goes OVER another plate at a convergent boundary. (it was shown by little rectangles along the boundary on the plate map we did)
Overriding
This type of volcano is flat and dome shaped. It is built up by oozing lava.
Shield
The Japanese word for Harbor Wave.
Tsunami