Introduction to Oceanography - Chapter 2 Reading and Homework
Convergent Boundary
-Most earthquakes occur along this kind of boundary - Most earthquakes near coastlines occur along this kind of boundary. - Most earthquakes in mountains are associated with this kind of boundary.
The cities of Los Angeles and San Francisco, CA, are about 380 miles apart. Plate motion along the San Andreas Fault is about five centimeters per year. If the Los Angeles Dodgers and the San Francisco Giants continue to play at their current locations, how long will it be before their games will constitute a cross-town rivalry?
About 13,230,000 cm
Rank the three different plate boundary types in terms of the severity of the earthquakes they produce.
Convergent, Transform, Divergent
Numerous small, shallow earthquakes tend to occur at __________.
Divergent Plate Boundaries
Iceland is located on what kind of plate boundary?
Divergent plate boundary
Earthquakes can occur only in the __________.
Lithosphere
Transform Boundary
Most earthquakes in North America occur along this kind of boundary.
Divergent Plate Boundary
Most earthquakes in the middle of the ocean occur along this kind of boundary.
A researcher interested in the vertical zonation of oceanic lithosphere would want to study __________.
Ophiolites
Compared to the rest of the planet, an unusually high concentration of hot spots and rifting is located on the continent of Africa. A likely explanation for this is that
The African Plate is essentially stationary with respect to Earth's interior and the thick continental crust acts as a "heat blanket"
The flat top of a guyot or tablemount in deep water is evidence that __________.
The seamount was once at the surface of the ocean, but is now submerged due to plate movement and erosion when it was near sea level.
Evidence shows that periodic reversals of Earth's magnetic field have resulted in __________.
a symmetrical pattern of normal and reverse magnetization in ocean crustal rocks
A trench and a chain of volcanoes known generally as a volcanic arc are always present where there is
subduction
Loihi is..
the newest Hawaiian volcano.
