A seismogram is a record of an earthquake that's obtained from a seismic instrument. It's in the form of a graph.
"Shake, Rattle, and Roll". But seriously folks, it's called a "seismogram".
Seismographs record the arrival time and amplitude of seismic waves. They can be used to locate the earthquakes epicentre and estimate the earthquake's magnitude. Please see the related question.
The basic concept of seismic instruments is to record vibrations. Older machines use paper, ink, and a drum to record the level of vibrations.
A seismograph is an instrument that measures the seismic wave activity in an area. According to Wikipedia, Seismometersare instruments that measure and record motions of the ground, including those of seismic waves generated by earthquakes, nuclear explosions, 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. A seismic wave, according to wikipedia is, "Seismic waves are waves of force that travel through the Earth or other elastic body, for example as the result of an earthquake, explosion, or some other process that imparts forces to the body. Seismic waves are also continually excited on Earth by the incessant pounding of ocean waves (referred to as the microseism) and the wind."Seismograph is another Greek term from seismós and γράφω, gráphō, to draw. 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. Both types provide a continuous record of ground motion; this distinguishes them from seismoscopes, which merely indicate that motion has occurred, perhaps with some simple measure of how large it was.
a seismograph
The first instrument to ever record an earthquake was the seismograph, invented by John Milne in 1880. It consisted of a rotating drum that recorded ground motion caused by seismic waves, allowing for the measurement and analysis of earthquakes.
A seismograph is the instrument used to record earthquake waves. It consists of a vibrating mass attached to a fixed base, which moves during ground shaking and produces a record of the seismic waves on a rotating drum or digital display.
A seismograph is the instrument used to record seismic waves. It consists of a ground motion sensor (such as a geophone or accelerometer) coupled with a recording device to capture the ground movements during an earthquake or other seismic events.
Stestmophology
this is where the seismic waves recorded; measures vertical earth motion
The instrument used to detect and record earthquakes is called a seismograph. It measures the motion of the ground caused by seismic waves and produces a graphical representation known as a seismogram.
Earthquakes are measured by a seismometer, also known as a seismograph.
To try to predict earthquakes, and get advanced warning of them.
A seismograph is used to record shaking or vibrations in the Earth's crust. It consists of a sensitive instrument that detects ground motion caused by seismic waves during an earthquake. The information recorded by a seismograph helps scientists determine the location, intensity, and duration of an earthquake.
seismogram
On the drum of a seismic recorder, the pen moves up or down according to the earthquake waves reaching it, giving a 2D record.
A seismometer is used to detect and record earthquakes by measuring the motion of the ground. It consists of a mass suspended on a spring that moves with the vibrations caused by an earthquake, which is then recorded on a seismograph.