A seismograph, or seismometer. Seismograph or Seismometer
There are two instruments, which are basically the same thing. There is the seismograph, and a more specific tool measures the waves on what is called the Richter scale. Eart … hquakes are given a number from one to ten, ten being the strongest. The strongest earthquake that their ever was, was measured a 9.3. Split and merge into it. Answer by Harlequin Williams. Confidence votes 67. A seismometer measures seismic waves; a seismograph registers and records them. Most scientists use something called a seismograph which is a machine with a pen on it which moves when shaking occurs on a rotating paper called a seismogram. A seismometer measures seismic waves; a seismograph registers and records them. Most scientists use something called a seismograph which is a machine with a pen on it which … moves when shaking occurs on a rotating paper called a seismogram. You have probably seen those up and down lines that the machine makes. There are two instruments, which are basically the same thing. There is the seismograph, and a more specific tool measures the waves on what is called the Richter scale. Eart … hquakes are given a number from one to ten, ten being the strongest. Measuring the Size of an Earthquake. Seismic waves are the vibrations from earthquakes that travel through the Earth; they are recorded on instruments called seismographs. Seismographs record a zig-zag trace that shows the varying amplitude of ground oscillations beneath the instrument. The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included for the variation in the distance between the various seismographs and the epicenter of the earthquakes. Seismologists use two main devices to measure an earthquake: a seismograph and a seismoscope. The seismograph is an instrument that measures seismic waves caused by an earthquake. The seismograph has three main devices, the Richter Magnitude Scale, the Modified Mercalli Intensity Scale, and the Moment-Magnitude Scale. Seismometers are instruments that measure motion of the ground, including those of seismic waves generated by earthquakes, volcanic eruptions, and other seismic sources. Records of seismic waves allow seismologists to map the interior of the Earth, and locate and measure the size of these different sources. It is often used to mean seismometer, though it is more applicable to the older instruments in which the measuring and recording of ground motion were combined than to modern systems, in which these functions are separated. What is a seismograph. A seismograph, or seismometer, is an instrument used to detect and record seismic waves. Seismic waves are propagating vibrations that carry energy from the source of an earthquake outward in all directions. They travel through the interior of the Earth and can be measured with sensitive detectors called seismographs In order to record seismic waves, scientists use a seismograph, which rates earthquakes on a scale of 1-10. To rate the earthquake, the seismograph will take three factors int … o consideration, duration, distance, and power of the earthquake. 2 people found this useful. There are two instruments, which are basically the same thing. There is the seismograph, and a more specific tool measures the waves on what is called the Richter scale. Eart … hquakes are given a number from one to ten, ten being the strongest. The study of seismic waves is known as seismology, a word derived from a Greek word meaning to shake.. Seismographs are the instruments which record earthquakes. Scientists use these instruments as their principal tool to study seismic waves. They are very sensitive instruments that can detect, measure and record ground vibrations and their intensities during an earthquake. A seismograph is a simple pendulum. 
http://www.answers.com/Q/What_instrument_measures_seismic_waves http://www.answers.com/Q/What_is_an_instrument_that_records_seismic_waves http://earthquake.usgs.gov/learn/topics/measure.php http://skywalker.cochise.edu/wellerr/students/measure-quake/paper.htm https://en.wikipedia.org/wiki/Seismometer http://www.sms-tsunami-warning.com/pages/seismograph http://www.answers.com/Q/What_is_an_instrument_that_records_seismic_waves http://www.sms-tsunami-warning.com/pages/seismology-measurement
describe the instrument used to record seismic waves