SECTION 1
SECTION 2
SECTION 3
VOCABULARY
EXTRA CREDIT
100
what prevents rocks from moving past each others? page 319
What is friction
100
what is a seismograph? page 325
an instrument that records vibrations in the ground.
100
what is a tsunami? page 329
a giant ocean wave that forms after volcanic eruptions, submarine earthquake, or landslide.
100
what is the meaning of earthquakes? 320
What is a movement or trembling of the ground that is caused by a sudden release of energy when rocks along a fault move.
100
how old is the fault in the Mississippi river region? page 324
600 million years ago
200
what is a sudden return of ellasticlly deformed rock to its undeformed shape?
What is Elastic Rebound
200
what is an seismograph?
a tracing of earthquakes motion that is recorded by seismograph
200
what is a seismic gap? page 331
an area along a fault where relatively few earthquakes have occurred recently but where strong earthquakes are known to have occur in the past.
200
what is focus?
What is the location within earth along a fault at which the first motion of an earthquakes occurred.
200
the 3 main compositions layers of the earth are? page 322
What is crust, mantle, and the core
300
what are other ways earthquakes happen? page 321
What is a meteorite, landslides, and explotions such as bombs.
300
how do scientist determined distance of an epicenter?
they analyze arrival of P waves and arrival of waves is, the farther away they are the farther away the earthquake occurred.
300
earthquakes that preceded by little earthquakes? page 332
What is foreshocks
300
what does body wave mean?
a seismic wave that travels through the body of a medium
300
what is the shadow zone? page 322
an area on earths surface where no direct seismic waves from particular earthquakes can be detected
400
what are the names of seismic waves? page 320
What are body waves and surface waves
400
what do you use to determine or study amount of damage done by earthquake? page 327
What is magnitude and intensity
400
why are the safety rules for earthquakes important? page 330
helps prevent death, injury, and property damage.
400
meaning of magnitude?
a measure of the strength of an earthquake
400
what does the Richter scale?
measure the ground motion from an earthquake to find the earthquakes strength.
500
who was the scientist who in 1909 discovered the speed os seismic waves increases at about 30 km beneath surface of continents?
who is Andrija Mohorovicic
500
what is the mercalli scale?
expresses intensity in roman numerals for I to XII and provides description of the effects of earthquakes intensity.
500
what are earthquakes clled that are after main earthquakes?
What is aftershocks
500
meaning of intensity?
in earth science the amount of damage caused by an earthquake.
500
who invented the first seismic wave detector in 132 A.D.? page 333
Zhang Heng
M
e
n
u