Earth's Layers: Vocabulary Flashcards
Vocabulary Flashcards
A solid sphere of metal,
mainly nickel and iron, at
Earth’s center.
Inner Core
The layer of rock between
Earth’s outer core and crust,
in which most rock is hot
enough to flow in convection
currents; Earth’s thickest
layer.
Mantle
The layer of Earth made up of
the crust and the rigid rock
and upper mantle, averaging
about 40 kilometers thick
and broken into tectonic
plates.
Lithosphere
One of the large, moving
pieces into which Earth’s
lithosphere is broken and
which commonly carries
both oceanic and continental
crust
Tectonic Plate
A layer of molten metal,
mainly nickel and iron, that
surrounds Earth’s inner core.
Outer Core
A thin outer layer of rock
above a planet’s mantle,
including all dry land and
ocean basins.
Crust
The layer in Earth’s upper
mantle and directly under
the lithosphere in which rock
is soft and weak because it is
close to melting.
Asthenosphere
The hypothesis that Earth’s
continents move on Earth’s
surface.
Continental Drift
A long line of sea-floor
mountains where new ocean
crust is formed by volcanic
activity along a divergent
boundary.
Mid-Ocean Ridge
A circulation pattern in which
material is heated and rises
in one area, then cools and
sinks in another area, flowing
in a continuous loop.
Convection Current
A hypothetical supercontinent
that included all of the
landmasses on Earth. It
began breaking apart about
200 million years ago.
Pangaea
The transfer of energy from place
to place by the motion of heated
gas or liquid; in Earth’s mantle,
convection is thought to
transfer energy by motion of
solid rock, which when under
great heat and pressure can
move like a liquid.
Convection
Explore essential vocabulary related to Earth's structure through informative flashcards depicting key terms such as Inner Core, Mantle, Lithosphere, Tectonic Plate, Outer Core, and more. Enhance your knowledge of the planet's composition and geology.
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Presentation Transcript
Changing Earth 1.1 & 1.2 Vocabulary Flashcards
A solid sphere of metal, mainly nickel and iron, at Earth s center.
The layer of rock between Earth s outer core and crust, in which most rock is hot enough to flow in convection currents; Earth s thickest layer.
The layer of Earth made up of the crust and the rigid rock and upper mantle, averaging about 40 kilometers thick and broken into tectonic plates.
One of the large, moving pieces into which Earth s lithosphere is broken and which commonly carries both oceanic and continental crust
A layer of molten metal, mainly nickel and iron, that surrounds Earth s inner core.
A thin outer layer of rock above a planet s mantle, including all dry land and ocean basins.
The layer in Earths upper mantle and directly under the lithosphere in which rock is soft and weak because it is close to melting.
The hypothesis that Earths continents move on Earth s surface.
A long line of sea-floor mountains where new ocean crust is formed by volcanic activity along a divergent boundary.
A circulation pattern in which material is heated and rises in one area, then cools and sinks in another area, flowing in a continuous loop.
A hypothetical supercontinent that included all of the landmasses on Earth. It began breaking apart about 200 million years ago.
The transfer of energy from place to place by the motion of heated gas or liquid; in Earth s mantle, convection is thought to transfer energy by motion of solid rock, which when under great heat and pressure can move like a liquid.
