Mount Pinatubo in the Philippines erupted in 1991 after being dormant for roughly 600 years. It was one of the largest volcanic eruptions of the 20th century. The eruption was so massive that the sulfur dioxide it released into the ...
Discussion Forum Latest Questions
This pair is incorrectly matched because Krakatoa is located in Indonesia, not Malaysia. It sits in the Sunda Strait. The other pairs—Fujiyama in Japan, Etna in Italy and Mount Popa (an extinct volcano) in Myanmar—are all geographically and geologically correct. ...
A seismic gap is a section of a known active fault that hasn’t ruptured in a long time compared to other segments. Seismologists believe these gaps are “overdue” for an earthquake because tectonic stress continues to build up there, making ...
The country where destructive ocean waves are traditionally and officially called Tsunamis is Japan. Due to its geographic position atop several converging tectonic plates, Japan has a long and tragic history with these events, leading them to develop the world’s ...
S-waves are shear waves that move by displacing atoms perpendicular to the wave’s path. This requires “shear strength,” which only solids possess. Since the outer core is a liquid (molten iron and nickel), it has no shear strength, causing S-waves ...