[DOC] [TLE] Seismographs - Keeping Track of Earthquakes [PAR] Apr 7, 2016 ... But sensitive detectors (seismometers) can record theses waves emitted ... that 
produces a permanent recording, they are called seismographs. [DOC] [TLE] Seismograph & Seismometer - SMS Tsunami Warning [PAR] A seismograph, or seismometer, is an instrument used to detect and record ... 
They are recorded on seismometers that measure the horizontal ground motion. [DOC] [TLE] Seismometer - Wikipedia [PAR] Seismometers are instruments that measure motion of the ground, including 
those of seismic .... Further re-analysis was performed in the 1980s using these 
early recordings, enabling a more precise determination of the ... Seismometers 
unavoidably introduce some distortion into the signals they measure, but 
professionally... [DOC] [TLE] An Illustrated Guide to Reading a Seismogram (USGS ... [PAR] Sometimes, they shake too much and data are off-scale. ... Seismometers are 
sensitive enough to pick up vibrations from earthquakes around the world  if 
they're ... Seismometers record not only earthquakes but anything that can make 
the... [DOC] [TLE] Lab 10 - Earthquake Epicenter Location [PAR] They are followed by the S-waves (also called "secondary," "shear," or "shake"). 
... Remember that seismographs record three types of earthquake waves which 
have been described to you in .... If you chose the "time" formula, you're right. [DOC] [TLE] Seismographs | Article about Seismographs by The Free Dictionary [PAR] A seismogram is the record from such an instrument An instrument used in 
seismology ... which measures the tremors caused by volcanos when they're 
active. [DOC] [TLE] Correlation between tornadoes and activity recorded by seismographs [PAR] Mar 13, 2012 ... They found a link between atmospheric activity as measured by a seismograph 
and a strong tornado. They say this link could lead to further... [DOC] [TLE] Adopt a Seismograph Station - Living in Earthquake Country ... [PAR] They should know the names of the continents and oceans and have basic ... 
Coastal waves crashing into the shoreline can be recorded by seismographs as 
... and re-access the page with information about the students' selected station. [DOC] [TLE] GG101 Earthquakes - Honolulu Community College [PAR] They're also, of course, caused by manmade explosions, and we saw in an 
earlier ... This might be called really more of a "seismoscope" than a "
seismograph" ... The first recording instrument that could record earthquakes was 
invented... [DOC] [TLE] Earthquakes and Earth.docx - St. Raymond High School for Boys [PAR] Oct 24, 2011 ... Seismographs are instruments that record earthquake waves. ... They're similar to 
waves that travel when you've a rope on the ground & move... [DOC] [TLE] EARTHQUAKE SEISMOLOGY I - UCL [PAR] The waves are then detected and recorded by seismograms, which measure, 
amplify and record ... at interfaces where seismic velocity and/or density change, 
and they obey Snell's law. ..... This can be re-written (dropping the subscripts) as:. [DOC] [TLE] Building a seismograph from scrap - European Geosciences Union [PAR] the seismic waves take to arrive at seismographs, as well as record- ... into 
electrical signals  they can be made to function as geophones. To make our... [DOC] [TLE] Phoning in earthquakes | Science News for Students [PAR] Aug 14, 2015 ... The machines that record these waves are called seismographs. The U.S. .... 
They're the first to signal an earthquake. But the follow-up... [DOC] [TLE] Seistronix RAS-24 Exploration Seismograph [PAR] And once you're back in the office, you can review the observer's log and view 
pick ... Recording can be from all 48 channels or from a smaller number of 
channels ... can easily locate geophone and cable problems before they affect 
your data. [DOC] [TLE] University of Cincinnati Research News [PAR] Seismograph data is recorded digitally instead of the old pen-and-graph paper 
method. That allows fast ... They're very fast, but not very high in amplitude. [DOC] [TLE] Who Invented the Seismograph? - Inventors - About.com [PAR] Seismic waves are the vibrations from earthquakes that travel through the Earth; 
they are recorded on instruments called seismographs. Seismographs record a... [DOC] [TLE] Seattle Seahawks fans

Question: They're recorded on seismographs
Answer: earthquakes