Who proposed the elastic rebound theory?
Henry Fielding Reid
Reid’s Elastic Rebound Theory. From an examination of the displacement of the ground surface which accompanied the 1906 earthquake, Henry Fielding Reid, Professor of Geology at Johns Hopkins University, concluded that the earthquake must have involved an “elastic rebound” of previously stored elastic stress.
How does the elastic rebound theory explain the origin of earthquakes?
Elastic rebound is what happens to the crustal material on either side of a fault during an earthquake. The rock becomes distorted, or bent, but holds its position until the earthquake occurs, and the rock snaps back into an unstrained position, releasing energy that produces seismic waves.
Which major scientific developments came about because of the 1906 San Francisco earthquake?
Among the most significant observations made after the 1906 earthquake were triangulation surveys — optical measurements that detect changes in the angles between lines connecting monuments fixed in the ground.
Which statement best describes elastic rebound theory?
Which of the following best describes “elastic rebound” theory of earthquakes? As an earthquake occurs, the elastically deformed rocks along the fault spring back to their original shape as much as possible.
How does the elastic rebound theory explain the occurrence of earthquakes quizlet?
The theory that continuing stress along a fault results in a buildup of elastic energy in the rocks, which is abruptly released when an earthquake occurs.
What does the elastic rebound theory explain quizlet?
Elastic rebound theory. IT DESCRIBES THE BUILD UP AND RELEASE OF STRESS DURING AN EARTHQUAKE. Rocks on either side of a fault are locked in place by friction. Rocks will slowly deform over time. When the stress exceeds the strength of the rock, the rocks will fault.
What changed after the 1906 San Francisco earthquake?
Over several days, while the already-damaged city burned, over 3,000 people died, nearly half of the city’s population of 400,000 were left homeless, and inestimable numbers of vital artifacts and records were lost when cultural and city institutions were reduced to ruins and ash.
What did scientists learn from the 1906 San Francisco earthquake?
The team found that the San Andreas fault ruptured over a length of 270 miles. The geological investigations after the 1906 earthquake formed the original basis of what we know today about fault lines. Before 1906, people believed that earthquakes created fault lines instead of the other way around.
Why is elastic rebound theory important?
earthquake prediction The elastic rebound theory of earthquake sources allows rough prediction of the occurrence of large shallow earthquakes.
Which represents the epicenter of the earthquake quizlet?
The epicenter is the point on the surface above the focus – the place on the surface that would receive the most intense vibrations. How can the ground move during an earthquake?
Why do most earthquakes take place at tectonic plate boundaries quizlet?
Epicenter-on the surface of earth above the focus//Most earthquakes take place at these boundaries because the plates run or slide past each other and the bumping causes shakes, or earthquakes. the highest concentration of earthquake occur on tectonic plate boundaries.
How is elastic rebound related to earthquakes quizlet?
Elastic-rebound theory is the concept that earthquakes happen because stresses build up, causing rock to bend elastically until slip on a fault occurs.