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Earth's Interior Review

Terms in this set (27)

Crust
Earth's outermost layer.
Mantle
The layer of hot, solid material between Earth's crust and core.
outer core
the liquid layer of the Earth's core that lies beneath the mantle and surrounds the inner core
inner core
A dense sphere of solid iron and nickel at the center of Earth
convection currents in the mantle
Most geologists think that the movement of Earth's plates is caused by
Convection
The transfer of heat by the movement of a fluid (like in the mantle of the earth or a boiling pot of water)
Conduction
The direct transfer of heat from one substance to another substance that it is touching (A pot handle)
Radiation
Energy that is radiated or transmitted in the form of rays or waves or particles (from the sun to the earth)
constructive force
a force that builds up mountains and landmasses on Earth's surface
destructive force
A force that slowly wears away mountains and other features on the surface of Earth
geology
the study of the earth, specifically rocks and the planet's crust
rock
The material that forms earth's surface
Granite
a rock that makes up the core of the continents
Basalt
a rock that makes up much of the ocean floor
pressure
the force pushing on an area or surface
continent
one of the large landmasses of the earth
seismic waves
a wave produced by an earthquake
P waves
a seismic wave that causes particles of rock to move in a back-and-forth direction within the crust
S waves
A type of seismic wave that moves the ground up and down or side to side in the upper mantle
Asthenosphere
The soft layer of the mantle on which the lithosphere floats.
Density
a measure of how much mass there is in a volume of a substance
convection currents
Circular currents in the mantle caused by the magma being heated by the core off the Earth.
Which is more dense? Oceanic Crust or Continental Crust?
Oceanic Crust is more dense
Which is Thicker? Oceanic Crust or Continental Crust?
Continental crust is much thicker
The mantle is divided into
upper mantle (closer to the crust) & the stiffer or lower mantle
The outer core is
liquid
the inner core is
solid
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