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Earthquakes Flashcards | StudBud
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Earthquakes
Earthquakes
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Chapter 8 in earth science,
Flashcards
19 cards
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Practice quiz
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Questions
19
Answers
1
What generates earth's magnetic field?
The iron in outer core
Tectonic Plates
Mr. O bench pressing 10,000 lbs magnets
The atmosphere
2
What is the composition of the outer core?
Solid Iron/nickle
Liquid iron/nickle
Melted Rock
Solid rock
3
A time travel graph can be used to find
damage of an earthquake
strength of an earthquake
epicenter of an earthquake
focus of an earthquake
4
Which of the following is used to determine earthquake risk?
hydrogen gas emissions near fractures
strain in rocks near fault
changes in color of rocks nera faults
height of ocean waves after seismic activity
5
Which waves travel the fastest?
Surfer Wave
Surface Wave
S Wave
P wave
6
What is a record of seismic activity?
Richter Scale
Seismograph
Moment Magnitude
Seismogram
7
The lithosphere, athenosphere, lower mantle, outer core and inner core are distinct by what?
Depth Level
Water content
Physical properties
Chemical composition
8
The core, mantle and crust are defined based on?
Physical Properties
Water content
Chemical composition
Level Depth
9
Where is the moho?
Between crust and mantle
Below the mantle
In the atmosphere
Between inner and outer core
10
What is also known as compression waves?
Surfer Waves
Surface Waves
P waves
S Waves
11
What is a device that measures seismic waves?
Seismogram
Moment Magnitude
Richter Scale
Seismograph
12
Describe particle movement of surface waves.
Circular pattern
Up and down
Side to side
At right angles
13
What is the contemporary way scientists use to measure earthquakes?
tsunami scale
moment magnitude
moho scale
richter scale
14
Most earthquakes are produced by a rapid release of what kind of energy?
mechanical
kinetic
elastic
thermal
15
To find the epicenter of an earthquake, what number of seismic stations that are needed?
3
5
3 * 10^8
1
16
What is a fault?
A fracture in earth where movement has occured
A thing
A place on the earth where earthquakes cannot occur
Another name for an earthquake
17
Describe the cause of an earthquake
convection currents building up
Bending a ruler too far
release of elastic energy stored in rock
the gradual movement of a fault
18
What is the solid outer rocky part of the earth?
Lithosphere
Lower mantle
Athenosphere
Inner core
19
What is the point underground in which an earthquake begins?
foreshock
Focus
Epicenter
fault
