ALL
Earthquake
Faults
Waves
Enter Category Name
100
What is the name of a person that studies Earthquakes?
seismologists
100
What is an earthquake?
Shaking of the Earth is caused when 2 blocks of Earth slip past each other
100
How many Earthquake Fault types are there?
3
100
What type of wave travels faster: P-Waves or S-Waves? and Why?
P-waves, because they are the first initial wave from the earthquakes energy.
100
What instrument records earthquake waves?
Seismograph
200
What’s the most famous strike-slip fault in the United States?
San Andreas Fault
200
What is an epicenter?
Location on Earth’s surface directly above the focus
200
What’s a normal fault?
1 block of rock slides downward away from another block of rock
200
Which waves cause the most damage: body waves or surface waves?
Surface waves
200
What is the name of the written trace that records an earthquake from seismic station instruments?
Seismograms
300
What is a foreshock?
Foreshock is the Small earthquakes that occur before the main quake.
300
What is a hypocenter (focus)?
Place inside Earth where earthquake start
300
What's a reverse fault?
1 block of rock is pushed up over another block of rock
300
Energy travels from an earthquake in the form of what type of waves?
Seismic Waves (Body and Surface waves)
300
What is magnitude? What scale(s) do we use to measure it?
Magnitude measures how much energy is released from an earthquake; we can measure it by the Moment Magnitude Scale.
400
What is an aftershock?
An aftershock is a small earthquake that occurs after the main quake
400
Where do most earthquakes occur? What causes these earthquakes?
They occur along plate boundaries and the plates moving (convergent, divergent, and transform) causes earthquakes.
400
What’s a strike-slip fault?
When two blocks of rock move past each other.
400
Which are the two body waves?
S and P waves
400
What is intensity? What scale do we use to measure it?
Intensity is the amount of shaking produced by an earthquake, Modified Mercalli Scale.
500
How do scientists determine the distance from a seismic station to the epicenter of an earthquake? What type of graph do they use?
Travel-Time Graph
500
1. Fault
2. Epicenter
3. Focus
500
Name all the fault types and how they move:
Normal: one block moves down
Reverse: one block moves up
Strike-Slip: both blocks move side to side
500
What are the two types of surface waves?
Love and Rayleigh waves
500
What are some of the most common earthquake hazards?
Ground shaking, Liquefaction, Ground displacement (ground movement) along a fault, Flooding, Tsunamis, and fire.