What word means a sudden and violent collapse?

What kind of insurance pays to replace items destroyed by a fire in your house or apartment? When exiting a smoke filled space you should? How do you report a fire alarm? What should you include at the end of your safety briefing? Storys from people who surived cyclone Tracy? What two main hazards threaten the Caribbean islands? My smoke alarm has started to go off for no apparent reason can you explain please? Can your home owners insurance rates go up due to a claim of a natural disaster? How can you detect a fire? Where can one find more information about disaster recovery plan software? What rights do you have if storage unit is broken into? Can the landlord get into the apartament at any time? What are the stages of fire evacuation? What are goals of FEMA's diversity action plan? Where and when can tornado occur? What is EF0 regarding tornadoes? How is the maintenance of a fire extinguisher recorded? What should you do if a tornado comes if you are not in your home? How often of a smoke alarm battery? What happens to living and non living things if a tornado happens?