Divergent Boundaries
Where new crust forms.
What is along Divergent Plate Boundaries?
Earthquake patterns seen in Ocean-Continent Convergent Boundaries but NOT Continent-Continent.
What is a range of earthquake depths?
Directions plates move on either side of a transform boundary.
What is side-to-side?
Two southern hemisphere continents that are moving farther away from each other, but used to be attached.
What are Africa and South America?
The four types of evidence we used this week to analyze tectonic plate motion.
What are earthquakes, volcanism, topography, and seafloor age data?
Data type appearing in a thin line along divergent boundaries.
What are shallow earthquakes?
The convergent boundary type that experiences the most volcanism.
What are Ocean-Continent Convergent Boundaries?
Transform boundary that poses the most danger to us Californians.
What is the San Andreas Fault?
The average rate that tectonic plates move.
What is the rate that fingernails grow (double points for <1 in/year)?
A science-y word for Earth's rocky crust.
What is the lithosphere?
The types of crust divergent boundary can occur on.
What are oceanic crust and continental crust?
Topographical data used to determine the presence of a Continent-Continent Plate Boundary.
Very high mountains (double for mentioning "occuring in rows")
Depth of earthquakes seen at transform boundaries.
What are shallow earthquakes?
The study of rock ages.
What is Geochronology?
A very chilly continent that has volcanoes, and fossils of tropical plants and animals.
What is Antarctica?
The topography seen along these boundaries.
What are raised edges along Divergent Plate Boundaries?
The reason oceanic plates sink below continental plates at subduction zones.
What is plate density?
How we can qualitatively identify transform boundaries on Earth's surface.
What are offset surface features?
(Double points for mentioning use of sonar for deep-sea transform boundaries).
A series of islands formed entirely by volcanism in the middle if the Pacific Plate.
What are the Hawaiian Islands?
(Double points for mentioning "Hot Spot")
The name of the man who first sggested the theory of tectonic motion.
Who is Alfred Wegener?
The age of the oldest known seafloor.
What is 180 million years old?
The reason the oldest seafloor visible on Earth today is only millions of years old, while continental rocks can be up to billions of years old.
What are subduction zones (ocean-continent convergent boundaries)?
Orientation of transform boundaries along the Mid-Ocean Ridge in the Atlantic Ocean.
What is perpendicular (E-W; 90 degree angle to boundary; etc.)?
The direction the western side of California is moving currently.
What is north?
The missing piece of the theory of plate motion that caused it to be scrutinized at first.
What is the driving force/motor/engine that causes tectonic plates to move?
(Double points for mentioning "Mantle Convection" or "magma")