With reference to seismic activities, consider the following statements:

The San Andreas Fault in Australia is known for its potential to produce large earthquakes.

The Ring of Fire is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur.

The Himalayan region is seismically active due to the collision of the Indian and Eurasian tectonic plates.

The Richter scale measures the intensity of earthquakes, providing a logarithmic scale for magnitude.

How many of the above statements is/are correct?

Question

"The San Andreas Fault in Australia is known for its potential to produce large earthquakes."
- Incorrect: The San Andreas Fault is located in California, USA, not Australia. It is a well-known transform fault where the Pacific Plate and North American Plate slide past each other, making it highly seismically active.
"The Ring of Fire is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur."
- Correct: The Ring of Fire is a tectonically active zone surrounding the Pacific Ocean, characterized by frequent earthquakes and volcanic eruptions due to subduction zones and plate movements.
"The Himalayan region is seismically active due to the collision of the Indian and Eurasian tectonic plates."
- Correct: The Himalayas are one of the most seismically active regions in the world due to the ongoing collision of the Indian Plate with the Eurasian Plate, leading to frequent earthquakes.
"The Richter scale measures the intensity of earthquakes, providing a logarithmic scale for magnitude."
- Incorrect: The Richter scale measures the magnitude of an earthquake, not its intensity. Magnitude refers to the energy released at the source of the earthquake, while intensity (which is measured by the Modified Mercalli Scale) describes the effects of the quake at different locations. However, the Richter scale is logarithmic.

GKToday Admin · Accepted Answer

Only two

"The San Andreas Fault in Australia is known for its potential to produce large earthquakes."
- Incorrect: The San Andreas Fault is located in California, USA, not Australia. It is a well-known transform fault where the Pacific Plate and North American Plate slide past each other, making it highly seismically active.
"The Ring of Fire is a major area in the basin of the Pacific Ocean where many earthquakes and volcanic eruptions occur."
- Correct: The Ring of Fire is a tectonically active zone surrounding the Pacific Ocean, characterized by frequent earthquakes and volcanic eruptions due to subduction zones and plate movements.
"The Himalayan region is seismically active due to the collision of the Indian and Eurasian tectonic plates."
- Correct: The Himalayas are one of the most seismically active regions in the world due to the ongoing collision of the Indian Plate with the Eurasian Plate, leading to frequent earthquakes.
"The Richter scale measures the intensity of earthquakes, providing a logarithmic scale for magnitude."
- Incorrect: The Richter scale measures the magnitude of an earthquake, not its intensity. Magnitude refers to the energy released at the source of the earthquake, while intensity (which is measured by the Modified Mercalli Scale) describes the effects of the quake at different locations. However, the Richter scale is logarithmic.

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