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Side ASide B
the earths crust is composed primarily of...
aluminum- rich silicate
plate tectonics is driven by energy from...
the earths internal heat
which zone of the earths interior is liquid?
the rigid tectonic plates move over the upper mantle (asthenosphere) which is..
which part of the earth is LEAST dense?
the earths magnetic field is the result of..
movements in the inner and outer core
the earth's tectonic plates move toward each other at..
hit mantle rises toward the surface at
at subduction zones
the ocean crust is melted and destroyed
continents are higher than the ocean floor because
continental crust is lighter and thicker than ocean crust
in elastic deformation a solid will
return to its original shape when stress removed
the energy released during an earthquake was stored previously in
a fault formed by tensional stress is called a
which of the following describes seismic S waves?
shearing (sideways) motion
the first seismic waves to reach a distant recording instrument are
which seismic waves have a rolling (or circular) ground motion
the time interval between the arrival of P and S waves can determine the
distance to the epicenter
to determine the location of the epicenter of an earthquake you must have records from a minimum...
three seismograph locations
which is used to determine an earthquake's richter magnitude?
seismic wave height
which measure of earthquake strength is useful for studying the history of earthquake before...