Chapter 5 section 2 earthquake measurement Flashcards
1
Q
an instrument that records vibrations in the ground and determines the location and strength of an earthquake
A
seismographs
2
Q
a tracing of earthquake motion that is created by a seismograph
A
seismogram
3
Q
the point on Earth’s surface directly above an earthquake’s starting point, or focus
A
epicenter
4
Q
the point along a fault at which the first motion of an earthquake occurs
A
focus
5
Q
the simplest method by which seismologists find an earthquakes epicenter
A
time method
6
Q
what seismologists used most of the 20th century, commonly called the Richter scale
A
Richter magnetite scale
