Magnitude is a measure of the

size of seismic waves it produces

Where do most earthquakes occur

around the edges of the Pacific Ocean

place on surface directly above the focus

liquefaction occurs when

loose, saturated soils turns into liquid

Moment Magnitude is calculated using all of the following except

magnitude of past earthquakes in the area

fracture where movement has occured

studbud

Earth Science chapter 8

20 termsStudBud Administration67 plays

Earthquakes and Earth's Interior

Flashcards20 cardsFPractice quizPHost liveL

Questions 20

Answers

1
What measurement for earthquakes do most scientists use today
richter scale
epicenter magnitude scale
seismic scale
moment magnitude scale
2
Earth's core is an alloy of
iron and zinc
copper and iron
zinc and magnesium
iron and nickel
3
Magnitude is a measure of the
damage it causes
amount of shaking it produces
size of surface waves it produces
size of seismic waves it produces
4
which is not a characteristic of S waves
cannot be transmitted through air or water
shake particles at right angles to their direction of travel
travel slower than P waves
aka - longitudinal waves
5
Where do most earthquakes occur
around the edges of the Pacific Ocean
around the edges of the Atlantic Ocean
in the moutains of Africa
on the western lowlands of Europe
6
a time travel graph can be used to find the
epicenter of an earthquake
focus of an earthquake
strength of an earthquake
damage caused by an earthquake
7
earthquakes are produced by the rapid release of what kid of energy
elastic
kinetic
thermal
mechanical
8
Earth's thin, rocky outer layer
crust
outer core
mantle
core
9
Which of the following is used to determine earthquake risk
height of ocean waves after earthquakes
hydrogen gas emissions near fractures
strain in rocks near faults
changes in color of rocks near faults
10
what is the Moho
boundary b/n crust and mantle
the area of the mantle that will not transmit seismic waves
boundary b/n inner and outer core
the material of which the mantle is composed
11
continental crust is made largely of
basalt
limestone
gneiss
granite
12
a tsunamis can occur when there is vertical movement at a fault under
a mountain range
the San Andreas Fault
a small inland lake
the ocean floor
13
What is an epicenter
any spot along the nearest fault
place on surface directly above the focus
spot below the focus
spot halfway b/n focus and surface
14
liquefaction occurs when
mud slides downhill and buries buildings
loose, saturated soils turns into liquid
large waves wash over coastal areas and destroy structures
earthquakes occur in the ocean and damage ships at sea
15
Moment Magnitude is calculated using all of the following except
rigidity of rock in the area
magnitude of past earthquakes in the area
average displacement along the fault
surface area of the fault
16
Earth's inner core in solid because
extreme cold
the composition of its rock
its greater diameter
immense pressure
17
What is a fault
another name for an earthquake
fracture where movement has occured
place on surface where structures move
place where earthquakes cannot occur
18
violent shaking can cause soil an rock on slopes to move and cause a
sinkhole
landslide
fault
tsunamis
19
a seismogram shows that P waves travel
faster than S waves
same speed as S waves
same speed as surface waves
slower than S waves
20
What does Earth's crust and upper most mantel form
lithosphere
asthenosphere
hydrosphere
atmosphere

Earth Science chapter 8 Flashcards | StudBud