Transcript Jeopardy 16_17(#2) - Heritage Collegiate

Focus in
Picture
this
Potpourri
Potpourri
#2
Layered
down
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
The zone within Earth where
rock displacement produces an
earthquake.
What is focus?
Earthquake foci have been
classified by their depth of
occurrence. Those with points of
origin within 70 kilometres of the
surface are referred to as
___________.
What are shallow focus
earthquakes?
Earthquake foci have been
classified by their depth of
occurrence, those generated
between 70 and 300 km are
considered __________.
What are intermediate focus
earthquakes?
Earthquake foci have been
classified by their depth of
occurrence. Those with a
focus deeper than 300 km are
classified as ________.
What are deep focus
earthquakes?
The narrow zone of inclined
seismic activity that extends
from a trench downward into
the asthenosphere.
What is the Wadati-Benioff
zone?
Earth has an inner and outer _____.
What is the core?
Was developed using California
buildings as its standard, it is used to
estimate the strength of an
earthquake.
What is the Modified Mercalli
Scale?
A sediment layer characterized by a
decrease in sediment size from
bottom to top.
What is graded bedding?
Long, relatively narrow features that
form the deepest parts of the ocean.
What is a deep ocean trench?
Used to determine the distance to the
epicentre.
What is a travel time graph?
Relies on calculations that use
data provided by seismic records
(and other techniques) to estimate
the amount of energy released at
the source of the earthquake.
What is magnitude?
A measure of the degree of
earthquake shaking at a given
locale based on the amount of
damage.
What is intensity?
The spontaneous decay of certain
unstable atomic nuclei.
What is radioactive decay?
The weight per unit volume of a
particular material.
What is density?
A type of body wave that is the
first wave from an earthquake to
arrive at a seismograph.
What is a P wave?
The location on Earth’s
surface that lies directly above
the focus of an earthquake.
What is an epicentre?
A break in a rock mass along
which movement has
occurred.
What is a fault?
The sudden release of stored
strain in rocks that results in
movement along a fault.
What is elastic rebound?
A smaller earthquake that
follows the main earthquake.
What is an aftershock?
Small earthquakes that often
precede a major earthquake.
What is a foreshock?
The very thin outermost layer of
Earth.
What is the crust?
One of Earth’s compositional
layers. The solid rocky shell
that extends from the base of
the crust to a depth of 2900
kilometres.
What is the mantle?
A layer beneath the mantle
about 2270 kilometres thick,
which has the properties of a
liquid.
What is the outer core?
The solid innermost layer of
Earth, about 1216 kilometres
in radius.
What is the inner core?
Between the depths of 660
kilometres and 2900 kilometres a
more rigid layer called the
mesosphere or _______ is found.
What is the lower mantle?