What does a seismograph measure?

What does a seismograph measure?

Seismographs are instruments used to record the motion of the ground during an earthquake. In reality, these mechanisms are no longer manual, but instead work by measuring electronic changes produced by the motion of the ground with respect to the mass.

What is the main difference between a seismograph and a seismometer?

is that seismograph is an instrument that automatically detects and records the intensity, direction and duration of earthquakes and similar events while seismometer is (geology) a device used by seismologists to detect and measure seismic waves and therefore locate earthquakes etc; a seismograph.

What is the difference between seismograph and Richter scale?

A seismograph is an instrument used to detect and record earthquakes. The Richter scale is a numerical value used to measure the power or magnitude of earthquakes.

What is seismograph related to?

A seismograph is an instrument for measuring earthquake (seismic) waves. The seismometer itself consists of a frame and a mass that can move relative to it. When the ground shakes, the frame vibrates also, but the mass tends not to move, due to inertia.

What data does a seismograph collect?

Instruments sensitive to seismic waves that vibrate several times per second, called short period seismographs, are used to record local earthquakes, during which the waves reaching the seismograph are still very rapid and close together.

What is the underlying principle of seismograph construction?

What is the underlying principle of seismograph construction? A heavy weight suspended within a moving box needs to overcome inertia, resulting in a slight delay in the motion of the weight after the box moves.

What are the three seismographs?

Modern seismometers include three (3) elements to determine the simultaneous movement in three (3) directions: up-down, north-south, and east-west. Each direction of movement gives information about the earthquake.

How does a seismograph measure an earthquake?

A seismograph is the primary earthquake measuring instrument. The seismograph produces a digital graphic recording of the ground motion caused by the seismic waves. The digital recording is called a seismogram. A network of worldwide seismographs detects and measures the strength and duration of the earthquake’s waves.

What is the difference between epicenter and focus hypocenter?

The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Also commonly termed the focus.

What is the difference between a seismograph and a seismometer?

Natural Hazards. A seismometer is the internal part of the seismograph, which may be a pendulum or a mass mounted on a spring; however, it is often used synonymously with “seismograph”. Seismographs are instruments used to record the motion of the ground during an earthquake.

What is the difference between a mechanical seismograph and Richter scale?

A big mechanical seismograph may have a weight attached that weighs 1,000 pounds (450 kg) or more, and it drives a set of levers that significantly magnify the pen’s motion. The Richter scale is a standard scale used to compare earthquakes. It is a logarithmic scale, meaning that the numbers on the scale measure factors of 10.

What do seismograph stations mark on a globe?

They mark the points on the record at which these waves first arrive at the station. The simplest method of locating an earthquake on a globe is to find the time interval between the P- and S-wave arrivals at several seismograph stations.

How do you make a seismograph?

Therefore, most seismographs involve a large mass of some sort. You could make a very simple seismograph by hanging a large weight from a rope over a table. By attaching a pen to the weight and taping a piece of paper to the table so that the pen can draw on the paper, you could record tremors in the Earth’s crust (earthquakes).