seismograph ...
It is a Seismometer.
Scientists have not given earthquakes names as yet but the first recorded instance of someone using an earthquake intensity recording device was by a scientist by the name of Schiantarelli, who in 1783 recorded the intensity of an earthquake that happened in Calabrian, Italy.
There were 22,289 recorded earthquakes in 2011 worldwide according to the USGS. However, the USGS estimates that several million earthquakes occur in the world each year and go undetected because they hit remote areas or have very small magnitudes.
Earthquakes, by far, occur most frequently. On average, each year, there are about 1,800 tornadoes are recorded. The actual number of tornadoes is probably higher, most likely a few thousand, due to the many tornadoes that escape detection. By contrast, between five hundred thousand and 1 million earthquakes are recorded each year, of which 100,000 are strong enough to be felt.
Of the largest earthquakes recorded, Chile has the most, a total of 5/27.
For earthquakes world-wide from 2000 to 2012 there were ~ 2092 quakes with a magnitude 6.0 or higher or less than 1% of the total 332,723 recorded earthquakes according to the USGS National Earthquake Information Center.
Earthquakes are monitered by a device called a Richter Scale.
Seismology: the study of the vibrations from earthquakes, recorded on seismographs.
California has had many earthquakes, but no recorded hurricanes.
23534
chile has had about 1230
pacific plate
over 9000!
Scientists have not given earthquakes names as yet but the first recorded instance of someone using an earthquake intensity recording device was by a scientist by the name of Schiantarelli, who in 1783 recorded the intensity of an earthquake that happened in Calabrian, Italy.
There are on average 20,000 - 30,000 recorded earthquakes around the world each year according to the USGS.For significant earthquakes in 1999 see related link below. USGS keeps statistics of earthquakes by year and region.USGS Earthquake Hazards Program
The device used for measuring earthquakes is called a seismometer.
recorded earthquakes.
No they are not, relatively few earthquakes have ever been recorded in Australia as it is a very stable continent with no active volcanoes and few if no earthquakes.