0
How can scientist tell earthquakes occurred before records were kept?
Wiki User
∙ 13y ago
Shifts in geological layers on different sides of a fault...
Wiki User
∙ 13y ago
Anonymous
The rocks on one side move with respect to the rocks on the other side.
Add your answer:
Earn +20 pts
What is a major problem with predicting earthquakes?
No single change occurs before all earthquakes.
Major earthquakes are sometimes preceded by smaller earthquakes called .?
before shokes
What area along a fault where few earthquakes have happened recently but where strong earthquakes have happened before?
seismic gap
Does a seismograph record the air movementscaused by seismic waves?
Seismographs cannot measure volcanoes. When you research about seismographs, it may show thing about volcanoes. This is because right before a volcano erupts, it can cause little earthquakes and seismographs measure earthquakes!
What causes the earthquakes at the base of a volcano shortly before it erupts?
Tectonic plates.
In this northeastern region of australia there have been no volcanoes or earthquakes?
There have not been any eruptions though rare earthquakes have occurred before.
How do you access Georgia marriage records?
Marriage records are available to the general public. Between 1952 and 1996, marriage records were maintained by the Georgia Division of Health. Copies of marriage records that occurred before 1952 and after 1996 can be obtained from the Probate Court in the county where the marriage occurred.
When did the earthquake happen?
The historical record of earthquakes is very slim. Earthquakes happened thousands of years before man began keeping records. There are some historical evidence of past earthquakes and the ruins they left so they did happen. No one can tell you when the first one happened.
Scientists don't know the Richter scale for earthquakes that happened before seismometers were invented but they can work out mercalli numbers for these earthquakes why is this?
They can calculate intensity based on how the earthquake was felt at different places and what damage occurred from old newspaper reports and other historic documents.
What is the biggest landslide that ever happend?
The largest landslide on record occurred on May 18, 1980 when the north face of Mount St. Helens slid away just a few seconds before the volcano's historic eruption. Other, larger landslides probably occurred before records were kept of such things.
How many tornadoes have there been in the US?
That is impossible to determine. The United States averages over 1000 tornadoes every year, many of them occurred before we started keeping records of them.
What is a major problem with predicting earthquakes?
No single change occurs before all earthquakes.
Major earthquakes are sometimes preceded by smaller earthquakes called .?
before shokes
Did the eruption of Mt Lamington come as a shock?
Given that the eruption of Mt Lamington occurred long before written records or human habitation, it is unknown, but unlikely whether it came as a shock.
Why do scientist measure the heart rate of the water fleas before the treatment?
to compare between the answers the scientist is going to get after so the scientist is compare before and after
What are smaller earthquakes called that immediately follow a major earthquake?
earthquakes that immediately follow a major earthquake are called "aftershocks" as to small earthquakes before large earthquakes are called "foreshocks".
Why are there small earthquakes before an eruption?
The earthquakes are generated by magma forcing its way though and fracturing rock.
