Pyroclastics (or Tephra) are the fragmented materials—including ash, lapilli and volcanic bombs—ejected into the air during an explosive volcanic eruption. These fragments are formed from cooled lava and shattered pieces of the volcano’s internal structure that are blasted out by ...
Discussion Forum Latest Questions
Shallow-focus earthquakes occur within the Earth’s brittle lithosphere, typically between 0 and 70 km deep. These are the most common and often the most destructive types of earthquakes because their energy reaches the surface with minimal loss of intensity. ANSWER: ...
Surface waves are known as L waves (Long waves or Love waves). Unlike P and S waves that travel through the Earth’s interior (body waves), L waves travel only along the Earth’s surface. They move more slowly but have a ...