Random Flashcards
How long did it take for Pangea to break apart and form the arrangement of continents we see today?
millions of yrs
Which of the following are caused by wind
tectonic plate emotion
waves
EQ
mountain-building
erosion
waves and erosion
Where do volcanoes and large earthquakes most typically occur
along the edges of tectonic plates
Who is Marie Tharp? What did she and her colleague Bruce Heezen do to support plate tectonics?
a cartographer
first map of the Atlantic
the oceanic floor isn’t flat
the existence of mid ocean ridges
What plate are we on?
Pacific plate
What plate is Baja California on?
Pacific
What two plate boundaries occur at Baja California?
Divergent and transform
Describe interactions btw earth’s four major spheres in mudflow picture
Involved: hydrosphere (ocean evaporated & entered atmosphere OR transpiration of plants), atmosphere-condensation into clouds, precipitation to geosphere, mixes with loose dirt and debris, provides an area for mud to flow on a slope, affects biosphere
Mount Hood (pictured) is part of the Cascade Range. These active volcanoes are a chain that stretches along the west coast from northern California to southern British Columbia, Canada. It is part of the Ring of Fire. The Cascades are ________
The asthenosphere and lower mantle are made of roughly the same composition material, only it behaves differently in the asthenosphere.
asthenosphere vs lower mantle
roughly the same composition material, only it behaves differently in the asthenosphere
major difference between the crust and the lithosphere
The crust is compositionally distinct from the mantle, but the lithosphere is the rigid part of the crust and mantle.
In Wegener’s time, scientists thought that the occurrence of fossils of the same organism in two different, disconnected continents was proof that ________.
there had once been land bridges separating the continents
Among the following choices, the closest match for a divergent boundary is ________.
east african rift valley
