science Flashcards
(60 cards)
types of evidence of plate movement
- Fit of the continents
- Fossils
- Seafloor Spreading
- Ocean Drilling
type of fossil that is known to have been a type
of reptile, similar to the modern crocodile
Mesosaurus
type of fossil that was as large as a
modern wolf. Its fossils are found only
in South Africa and South America.
Cynognathus
type of fossil which translates to
“shovel reptile,”
Lystrosaurus
made up of sediment
that was carried or deposited
by a glacier and later
cemented to form rock.
Tillites
is an organic compound
such as remains of dead
plants and animals.
Coal
This is the reason why
Atlantic ocean becomes wider
while the pacific ocean is
getting smaller
Seafloor Spreading
was younger at the
Mid-Atlantic Ridge but progressively
older in either direction.
Ocean floor
GPS
Global
Positioning
System
is a branch of geophysics concerned with the magnetism
in rocks that was induced by the earth’s magnetic field
Paleomagnetism
is naturally occurring iron-rich mineral that is influenced
by magnetic field.
Magnetite
happens when the North Pole is transformed into the South Pole, and
the South Pole becomes the North Pole
magnetic reversal
consists of mostly iron, nickel, and sulfur
core
consists mostly of ultramafic silicates
mantle
consists mostly of granitic and mafic silicates rocks
crust
The uppermost solid part of the mantle and the
entire crust constitute the
LITHOSPHERE.
is the main source of
magma
ASTHENOSPHERE
The portion of the mantle which is just below the
lithosphere and asthenosphere, but above the
core is called as
MESOSPHERE.
is sometimes used to refer the core
of the earth or sometimes the whole interior.
BARYSPHERE
A sudden change in seismic velocities across a boundary
Seismic Discontinuity
The discontinuity between the hydrosphere and
crust is termed as the
CONRAD DISCONTINUITY.
is considered
to be the border between the
upper continental crust and the lower one.
The Conrad discontinuity
The Conrad discontinuity named after the seismologist?
Victor Conrad
The discontinuity between the crust and mantle is
called as the
Moho discontinuity.