Podcast
Questions and Answers
What is the term used to describe divergent boundaries in continental regions?
What is the term used to describe divergent boundaries in continental regions?
- Subduction zone
- Sea floor spreading
- Rift zones (correct)
- Convergence boundaries
At what depths do earthquakes typically occur in rift zones?
At what depths do earthquakes typically occur in rift zones?
- 10-15 km
- 5-10 km
- 2-8 km (correct)
- 15-20 km
What is the result of the Earth's unchanging size?
What is the result of the Earth's unchanging size?
- Crust is destroyed at about the same rate as it is created (correct)
- Crust is destroyed at a slower rate than it is created
- Crust is never destroyed or created
- Crust is created at a faster rate than it is destroyed
What occurs when an oceanic plate converges with a continental plate?
What occurs when an oceanic plate converges with a continental plate?
What is a common feature of oceanic-continental convergence?
What is a common feature of oceanic-continental convergence?
What happens when two oceanic plates converge?
What happens when two oceanic plates converge?
What was the magnitude of the strongest recorded earthquake in the world?
What was the magnitude of the strongest recorded earthquake in the world?
How many people died in the Indian Ocean Tsunami of 2004?
How many people died in the Indian Ocean Tsunami of 2004?
What is the primary cause of life and economic loss during earthquakes?
What is the primary cause of life and economic loss during earthquakes?
When did the Moro Gulf earthquake occur?
When did the Moro Gulf earthquake occur?
What is the estimated range of economic impacts of earthquakes?
What is the estimated range of economic impacts of earthquakes?
Can earthquakes be accurately predicted?
Can earthquakes be accurately predicted?
In what year was the Modified Mercalli Intensity scale developed?
In what year was the Modified Mercalli Intensity scale developed?
What is the name of the instrument developed by J.Milne, J.Ewing, and T.Gray?
What is the name of the instrument developed by J.Milne, J.Ewing, and T.Gray?
What feature did Emil Weichert introduce in 1898 to improve seismograph accuracy?
What feature did Emil Weichert introduce in 1898 to improve seismograph accuracy?
Who developed one of the first devices that records relative motion between a pendulum and the shaking ground?
Who developed one of the first devices that records relative motion between a pendulum and the shaking ground?
What is the name of the Russian seismologist who introduced a design that did away with the need for a mechanical linkage?
What is the name of the Russian seismologist who introduced a design that did away with the need for a mechanical linkage?
What is the oldest known record produced by Cecchi's instrument dated?
What is the oldest known record produced by Cecchi's instrument dated?
What is the primary purpose of collecting intensity data in a region?
What is the primary purpose of collecting intensity data in a region?
What are the three features of shaking that intensity scales are based on?
What are the three features of shaking that intensity scales are based on?
What is the name of the intensity scale developed by Giuseppe Mercalli in 1902?
What is the name of the intensity scale developed by Giuseppe Mercalli in 1902?
What factor does not affect the intensity of an earthquake?
What factor does not affect the intensity of an earthquake?
Who developed the Rossi-Forel Intensity Scale?
Who developed the Rossi-Forel Intensity Scale?
How many intensity scales have been developed to evaluate the intensity of earthquakes?
How many intensity scales have been developed to evaluate the intensity of earthquakes?
What is the magnitude of an earthquake based on?
What is the magnitude of an earthquake based on?
In which country were the first attempts to define magnitude scales made?
In which country were the first attempts to define magnitude scales made?
How many seismic stations are there in the Philippines?
How many seismic stations are there in the Philippines?
What is the symbol for the Richter magnitude scale?
What is the symbol for the Richter magnitude scale?
What is the location of the central operating station in the Philippines?
What is the location of the central operating station in the Philippines?
