Plate Tectonics 1
The broken pieces of lithospere that are made to move around 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 -lithosphere and asthenosphere).
mantle
The name of the supercontinent that existed hundreds of millions of years ago
Pangaea
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
In sea-floor spreading, molten material rises from the mantle and erupts to form
mid-ocean ridges
He developed the theory of continental drift
A boundary where two plates slide along each other and is the leading cause of earthquakes
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
The innermost layer of the Earth's is called the
Inner core
This is created when there is an earthquake under the ocean
Tsunami
The movement of the warmer and cooler mantle creates pockets of circulation within the mantle called
convection currents
Rift valleys occur at this type of plate boundry in the ocean and on land.
divergent
The rigid outer layer of Earth, made up of the crust and the uppermost part of the mantle. It’s broken into tectonic plates.
Lithosphere
3 types of evidence that supported the theory of continental drift
Continental fit (puzzles), fossil evidence, matching geological features (rocks, mountains), paleoclimate evidence (glacial deposits, coal deposits)
Vibrations that travel through Earth during an earthquake.
seismic waves
The deepest part of the ocean, The Mariana Trench, is formed by this type of plate boundary
convergent
When two plates meet at a convergent boundary, which one will subduct?
Oceanic plate / the denser plate
This word describes the action of one plate moving below another plate into the mantle
subduction