1) The document discusses different types of interior hazards including earthquakes, volcanoes, and sinkholes. It provides general facts about each hazard as well as the hazards they can cause. 2) Specific hazards from earthquakes mentioned include liquefaction, falling debris from collapsed buildings, and secondary hazards from flooding and fires. Volcano hazards include eruption columns, volcanic gases, lava flows, pyroclastic flows, landslides, and lahars. Sinkholes are formed from limestone being dissolved by groundwater. 3) An example case study of the 1985 Armero disaster in Colombia is provided, where a lahar from the Nevado del Ruiz volcano killed over 23,000 people due