Module 2 Flashcards
______ was a cartographer who’s map of the seafloor helped pave the way for plate tectonic theory.
Marie Tharp
Type of Plate Boundaries (3 types)
Convergent, Divergent, Transform
Transform boundary move _____
side and slide across (earthquake makers)
Divergent boundary move_______
away from each other (creates a rift)
Curving island chains that re associated with subduction zones and are volcanic in origin are ____________.
Island arcs
The layer of the Earth that is most associated with producing the magnetic field is _________.
Outer core
The cascade range in the Pacific Northwest is an example of ocean-ocean subduction.
False
Oceanic crust is denser than continental crust.
True
Hotspots are associated with ________.
No plate boundary
The lava that creates shield volcanoes is ________
mafic
Which of these is NOT a volcanic hazard
acidic lakes
______ is molten rock at the earth’s surface while _____ is molten rock that is underground.
Lava, Magma
A tabular (flat) igneous intrusion that cuts across and does not follow the layers of the surrounding rock is a(n) _______
Dike
Which of the following is not a common type of volcano?
Butte
Unlike stratovolcanoes, shield volcanoes have _________ slopes.
broad, gentle
A hypocenter or focus is _________________.
the point along the fault plane under the surface.
Earthquakes may create a large sea wave or ______________.
Tsunami
Which of the following waves will travel thought solid or liquid rock?
P-waves
An earthquake is __________________.
a sudden release of energy stored in rocks as they slide past each other.
The moment magnitude and richter scales that scientists use to give a numerical value to the magnitude of an earthquake. Magnitude is ________________.
the measure of the amount of energy released by an earthquake.
