Final 15
Basaltic magma forms when rock in the upper _______ melts.
What is mantle?
Composite volcanoes have _____________ eruptions.
What is explosive or violent?
The area from which lava flows from a volcano.
What is a vent?
To support his Pangea theory,Wegener collected fossil and rock evidence from South American AND from _________________.
What is Africa?
As pressure increases, the temperature at which a substance melts _____________.
What is increases?
Basaltic magma has the same silica content as __________ basalt.
What is rock?
Stratovolcanoes or composite volcanoes have alternating _________ of lava and cinder.
What is layers?
In a volcano, a ___________ is connected to a vent.
What is conduit?
In plate tectonic, convection currents travel along and therefore _______________ to the bottom of tectonics plates.
What is parallel?
The geosphere is the ATMOSPHERE AND the area from the surface of earth down to its __________.
What is center?
The amount of silica in basaltic magma.
What is LESS THAN 50%?
The melting point of albite at a depth of 100 km.
What is 1360 degrees C?
The shape of the sides of a shield volcano.
What is gently sloping.
In plate tectonic, convection currents travel perpendicular to and therefore upwardly and ________________ to tectonic plates.
What is downwardly?
The biosphere is all organisms on Earth AND the ______________ in which they live.
What is environment?
In the Big Bang theory, the energy that OFFSETS gravitational forces.
What is dark or dark energy?
The percent of water vapor in gases in a volcano.
What is 60%.
The eruptions of a shield volcano are _______ explosive.
What is "non" or non-explosive?
The boundary at which volcanoes form in plate tectonics.
What is convergent OR convergent boundary?
The amount by which Africa is shrunk in Bullard's "classical fit" of continents.
What is 35%?
The south eastern state which the Gulf Stream travels around to then move up the east coast.
What is Florida?
Diamonds are a ______________ rock.
What is metamorphic?
Cinder cone volcanoes eject small piece of ________ into the air.
What is magma?
A caldera is a ____________ in the ground.
What is a depression?
In instead of Bullard's "classical fit", a better fit appears to be fitting North America, South America, and Africa to the ________________ ridge.
What is mid-Atlantic OR mid-oceanic.