Tectonic Plate History
Harry Hess discovered this formation of new areas of oceanic crust which occurs when magma rises.
What is seafloor spreading?
A lowland region that forms where Earth's tectonic plates move apart.
What is a rift valley?
Large slabs of rock that divide Earth’s crust and move constantly to reshape the Earth’s landscape.
What are tectonic plates?
What is the outermost layer of the earth?
CRUST
The type of convergent boundary that has two land plates coming together.
What is Continental-Continental?
The name of the supercontinent proposed by Alfred Wegener.
Pangea
A long, narrow steep-sided depression in the bottom of the ocean; formed because of subduction
What is a deep ocean trench?
The place where two tectonic plates move towards each other.
What is a convergent boundary?
Oceanic Crust
The type of convergent boundary that has one land plate and one denser ocean plate coming together.
What is Continental-Oceanic?
The man who proposed continental drift.
Who is Alfred Wegener?
A curving chain of volcanic islands occurring around the margin of ocean basins.
What is an island arc?
The place where two tectonic plates slide past each other.
What is a transform fault boundary?
TRUE OR FALSE: A plate can be made of both oceanic and continental crust.
TRUE
The type of convergent boundary that has two ocean plates coming together.
What is Oceanic-Oceanic?
The man who discovered seafloor spreading.
Who is Harry Hess?
What is magma called when it comes to the surface?
LAVA
The place where two lithospheric plates come together, the denser plate subducting under the less dense plate.
What is a subduction zone?
The number of major tectonic plates on Earth.
What is seven?
The landform that divergent boundaries on land create.
What are rift valleys?
Which type of crust is thicker and less dense ?
Contiental Crust
The region around much of the rim of the Pacific Ocean where many volcanic eruptions and earthquakes occur.
What is the Ring of Fire?
The boundary where two tectonic plates move away from each other.
What is a divergent boundary?
The tectonic plate that covers Europe and Asia.
What is the Eurasian Plate?
The landform that divergent boundaries in the ocean create.
What are mid-ocean ridges?