Bands of normal and reversed polarity that are symmetrical to ridge crests prove that
ridge crests are convergent
ridge crests experience compression
ridge crests are divergent
fracture zones are transform faults
according to seafloor spreading, the age of the sea floor should be
older as the water becomes deeper
older away from a rift zone (ridge)
younger as the water becomes deeper
younger away from a rift zone (ridge)
the red sea in the east african rift valley is interpreted to be
a convergent plate boundary
a divergent plate boundary
a transform plate boundary
not a plate boundary
magnetic strips (zebra patterns/bar codes) of the sea floor
record the history of the floods on earth
are not symmetrical on both sides of a ridge
record the history of continental faulting
are symmetrical and record magnetic field reversals as mafic magma crystallizes at the ridge
the major supercontinent that formed in the paleozoic era broke into a northern supercontinent and a southern supercontinent. the northern supercontinent was called
pangaea
laurasia
gondwanaland
rodinia
the major supercontinent that formed in the paleozoic era broke into a northern supercontinent and a southern supercontinent. the southern supercontinent was called
pangaea
laurasia
gondwanaland
rodinia
japan appears to have formed from
hot spots (mantle plumes)
backarc spreading
mountain building
subsidence
a fragment of another continent or island arc welded onto a major continent is called
an accreted terrain
an island terrain
a mixed terrain
a partial terrain
according to the concept of mountains adjust their elevation in response to erosion.
weathering
gravitational collapse
block faulting
isostasy
the andes mountains in south america are 23,000 feet above sea level, while the alps in europe are 16,000 feet above sea level. this suggests that the andes are
younger than the alps
older than the alps
the same age as the alps
the same age as all mountains ranges on earth
the ultimate ending of a mountain range is to become
an ocean floor
a stable continental core (interior of a continent)
subducted into the asthenosphere
a convergent boundary