Chapter2

Which hypothesis best explains the continuous bend in the Hawaiian Islands-Emperor Seamount chain?

The direction of plate motion shifted over time over a stationary mantle plume (hot spot).

What do all plate boundaries have in common? Select only one answer.

They are all associated with zones of earthquakes.

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

Numerous small, shallow earthquakes tend to occur at __________.

divergent plate boundaries

Earthquakes can occur only in the __________.

lithosphere

Loihi is __________.

the newest Hawaiian volcano

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.

Which of the following is the main reason that Earth has a magnetic field? Select only one answer. The solid iron-nickel inner core spins rapidly in the same direction as Earth, but much faster. The Sun has such a powerful magnetic field that it creates a magnetic field on Earth. Convection in the liquid iron-nickel outer core generates a magnetic field. There is a giant bar magnet inside Earth. The solid iron-nickel inner core spins rapidly in the opposite direction.

Convection in the liquid iron-nickel outer core generates a magnetic field.

Iceland is located on what type of plate boundary?

Divergent

The process of subduction always forms a trench, and a volcanic arc always forms above the zone of melting. evidence of glaciers in areas that are now tropical the composition of meteors from outer space the pattern of similar mountain belts on different continents the distribution of species of fossils the way the shapes of the continents fit together like pieces of a jigsaw puzzle

evidence of glaciers in areas that are now tropical the pattern of similar mountain belts on different continents the distribution of species of fossils the way the shapes of the continents fit together like pieces of a jigsaw puzzle

A trench and a chain of volcanoes known generally as a volcanic arc are always present where there is __________.

subduction.The process of subduction always forms a trench, and a volcanic arc always forms above the zone of melting.