Assignment 2
The sea-floor spreading rates are estimated to be: a)0.1 to 1 centimeter/year b)100 to 1000 centimeter/year c)1 to 24 centimeter/year d)10 to 100 meter/year
1 to 24 Centimeter/Year
If a plate moves 20 mm per year, how far will it move in 1 million years? a)2,000 kilometers b)20 centimeters c)20 kilometers d)20 meters
2,000 Kilometers
The East African Rift is an example of: a)a divergent plate boundary. b)an ocean-ocean convergent boundary. c)an ocean-continent convergent boundary. d)a continent-continent convergent boundary.
A Divergent Plate Boundary
The Hawaiian Islands are the result of: a)ocean-ocean convergent plate motion. b)a mantle plume c)subduction d)divergent plate motion
A Mantle Plume
Which of the following features would you expect to find at an ocean-continent convergent boundary? a)earthquakes b)deep ocean trench c)volcanic mountain chain d)all of these
All of these
Which of the following provides evidence of plate motion? a)offset of rocks along the San Andreas fault b)the age distribution of basalt at mid-ocean ridges c)the age distribution of the Hawaiian Islands d)all of these
All of these
Passive continental margins are created by: a)transform motion. b)divergence c)convergence d)all of these
Divergence
Alfred Wegener named the most recent southern supercontinent: a)Gondwanaland. b)Glossopteris c)Laurentia d)Pangaea
Gondwanaland
The principle of contents being in a buoyant equilibrium is called: a)subsidence b)isostasy c)convection d)rebound
Isostasy
135 million years ago when the super-content was breaking apart, the northern super-continent was called: a)Pangaea b)Gondwana c)Glossopteris d)Laurasia
Laurasia
The tectonic plates are part of Earth's: a)asthenosphere b)lithosphere. c)mantle. d)crust
Lithosphere
Which of the following was not used by Wegener as evidence of continental drift? a)magnetic anomalies on the seafloor b)the geometric fit of the contents c)evidence of glaciation on widely separated contents d)fossils that were common to many contents
Magnetic Anomalies on the Seafloor
Which of the following features would you expect to find at an ocean-ocean convergent boundary? a)a transform fault. b)a rift c)shield volcanoes (like Hawaii) d)none of these
None of these
The Vine-Matthews hypothesis explains the origin of: a)plate tectonics b)continental drift c)seafloor magnetic anomalies d)polar wandering
Seafloor Magnetic Anomalies
The sliding of seafloor beneath a continent or island arc is known as: a)seafloor spreading b)obduction c)subduction d)convection
Subduction
Which of the following would you expect to find at a conteinnt-continent convergent boundary? a)deep ocean trench b)volcanic mountain chain c)suture zone d)all of these
Suture Zone
The S-Wave shadow zone is evidence that: a)the core is made of iron and nickel b)the inner core is solid c)the outer core is liquid d)the mantle behaves as ductile material
The Outer Core is Liquid
The San Andreas Fault is the best example of a: a)convergent plate boundary. b)divergent plate boundary. c)transform plate boundary d)none of the above
Transform Plate Boundary