Contiental Drift
Seafloor Spreading
Hodge Podge
Mid Ocean Ridges
Effects of Plate Tectonics
100
This is the name of the proposed "supercontinent" where all the earth's continents were once joined together.
What is Pangaea?
100
Seafloor Spreading occurs at what type of plate boundary?
What is a divergent boundary?
100
This is the term for one plate being forced underneath another plate.
What is subduction?
100
Two sea creatures you may find near a mid-ocean ridge
What are giant clams and tube worms?
100
These features are produced on earth when two continents collide.
What are mountains?
200
This is the scientist who first proposed the Theory of Continental Drift
Who is Alfred Wegener?
200
These features form as new crust rises to the surface during seafloor spreading
What are mid-ocean ridges?
200
The general name of lithospheric plate that sinks back into the mantle
What is a slab?
200
True or False: Water is near freezing at the mid-ocean ridge?
False, the magma rising at the mid-ocean ridge heats the surrounding water, allowing some forms of sea life to thrive.
200
These features are produced on the coasts of continents where oceanic crust moves underneath the continent.
What are volcanoes or volcanic arcs?
300
The accessory is Alfred Wegener often pictured with
What is a smoking pipe?
300
This ocean is currently growing in size due to seafloor spreading.
What is the Atlantic Ocean?
300
Branch of the military that Harry Hess served in during WWII.
What is the Navy?
300
Military technology that eventually allowed scientists to discover mid-ocean ridges.
What is sonar?
300
These natural disasters occur when a sudden movement occurs along transform boundaries.
What are earthquakes?
400
Name two types of evidence that were initially used to support the Theory of Continental Drift.
What are similar shapes of coastlines and fossil evidence?
400
This was the first evidence to support the idea of the reversal of earth's magnetic field.
What is matching strips of polarity on each side of a seafloor spreading region?
400
The human ailment/condition could you use to compare a volcano
What is acne/pimple/zit?
400
Rock at the mid-ocean ridge is ______ than the rock nearer the subduction zones.
What is newer/younger?
400
This is the name of fault found in California where several major earthquakes have occurred.
What is the San Andreas Fault?
500
Huge underwater mountain ranges
What are mid-ocean ridges?
500
The process that explains the age and the magnetic patterns of sea-floor rocks
What is sea floor spreading?
500
Explain the process of sea-floor spreading
What is molten rock from inside the Earth rises, cools, and forms new crust (new oceanic crust). The older crust breaks away from the mid-ocean ridge and the two pieces move away from the ridge in opposite directions, causing the sea-floor to spread.
500
Explain why the Earth is NOT getting larger if the sea floor is spreading
The Earth is not getting larger because older crust is being destroyed at subduction zones at the same or faster rate that new crust is being formed at the mid-ocean ridges.
500
The feature formed in the ocean when one oceanic plate is forced below another oceanic plate
What are trenches?
M
e
n
u