vocabulary
what is a rift
a gap or space made by cleaving or splitting
how are volcanoes formed
when magma works its way to the surface it erupts to form lava flows and ash deposits.
when did Alfred wegener discover continental drift
in 1912
what did is Pangaea also called
super continent
what does continental drift mean
the gradual movement of the continents across the earth's surface through geological time.
what are faults
the boundaries between Earth's tectonic plates
what is a shield volcano
broad, domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.
why did no one believe his theory
he had no evidence
what does pangaea mean
all lands
how did wegener think of this theory
by noticing that thedifferent large landmasses of the Earth almost fit together like a jigsaw puzzle.
what is a contour map
a map marked with contour lines
what is the most dangerous type of volcanoes
Composite volcanoes
Alfred Lothar Wegener was a German polar
researcher, geophysicist and meteorologist
which ocean was pangaea surrounded by
Panthalassa is a superocean that surrounded the super continent
what do tectonic plates have to do with continental drift
Earth's crust is not one piece, but is made up of many huge tectonic plates upon which the continents ride on
what is magnetic polarity
the magnetic equivalent of electric charge
what is the world largest volcanoe
Mauna Loa a shield volcanoe
what was alferd wegener know for
continental drift
how did the pangea break apart
plate tectonic movement
what causes continental drift
Wegener suggested that perhaps the rotation of the Earth caused the continents to shift towards and apart from each other
what does LAMOI stand for
lithosphere asthenosphere mantle outer core inner core
what are the 4 major types of volcanoes
Cinder Cone Volcanoes
Composite Volcanoes
Shield Volcanoes
Lava Domes
where did he go to college at
humboldt university of berlin
when was the pangaea formed
335 million years ago
what was alferd wegeners hypothesis
His hypothesis was that the continents had once formed a single landmass, called Pangaea, before breaking apart and drifting to their present locations.