Plate Tectonics 1
What is one of the slabs of rock that Earth's crust is broken up into?
Tectonic Plates
What is a thin layer of rock that surrounds Earth's outer core and crust?
Crust
What is a ball of hot, solid metals at the Earth's center?
Inner Core
What is it called when older oceanic crust sinks under younger crust?
Subduction
Convergent boundary (ocean and land)
A crack or break in the crust
Fracture
Lithosphere
What is Earths crust and very top mantle combined?
What is a layer of liquid metals that surrounds Earth's inner core?
Outer Core
A famous fault in California where two plates slide past each other, causing many earthquakes.
San Andreas Fault
What is it called when 2 continental plates collide and form mountains?
Convergent boundary (land)
What is Earth's layer of soft solid rock called?
Mantle
What is a boundary where 2 tectonic plates push together?
Convergent boundary
What is a boundary where 2 plates scrape past each other?
Transform Boundary
A type of fracture in the Earth where rocks on either side have moved past each other.
Fault
What is a boundary where 2 tectonic plates move apart?
Divergent boundary
What is the theory that Earth's lithosphere is broken in huge moving slabs and is driven by motion in the mantle?
Theory of Plate Tectonics
What is a process where oceanic tectonic plates sink under another plate?
Subduction
What is the layer of hotter, softer rock?
Mantle
Crust that is younger, cold and dense. Often pushed under older and lighter crust.
Oceanic Crust
What is a huge supercontinent that once included all of the land masses on Earth?
Pangea
What is the hypothesis that Earths continents were once joined together but have gradually moved apart?
Continental Drift
The semi molten layer of the mantle where the plates occur
Asthenosphere
The geologist that discovered the theory of continental drift
Alfred Wegner
What is a tremor of the earth's surface usually triggered by the movement of plates?
Earthquake
This is the place where 2 tectonic plates meet
plate boundary
What is it called when molten rock beneath the earth's surface escapes through a hole in the crust of the earth?
Volcano