18 Questions
What is the composition of a lahar?
Volcanic ash, water, and debris
What is the term for the deposition of volcanic materials ejected during an eruption?
Pyroclastic flow
What type of volcano is characterized by non-explosive eruptions and thin, runny lava?
Shield Volcano
What is the term for the particles of volcanic ash that travel long distances carried by winds and eventually settle onto the ground?
Ashfall
What type of volcanic hazard is characterized by a fast-moving river of mud and rocks?
Lahar
What is the term for the loose, pyroclastic material that makes up cinder cones?
Pyroclastic material
What is the primary force that propels ballistic projectiles through the air?
The force of gravity and air resistance
What is the primary composition of volcanic gases released during volcanic eruptions?
Water vapor, carbon dioxide, and sulfur dioxide
What is the primary source required for ignition to occur in the fire triangle?
Heat
What is a characteristic of lava flows that can affect their speed and viscosity?
The slope of the terrain and the type of lava
What is the result of the sudden release of energy in the Earth's lithosphere during an earthquake?
Shaking of the Earth's surface
What is the purpose of aiming the fire extinguisher at the base of the fire?
To prevent the fire from spreading
What is a type of geological hazard that can cause sudden and violent movements of the Earth's surface?
Earthquakes
What is the term used to describe a mixture of hot gases, ash, pumice, and other volcanic debris that are propelled high into the atmosphere?
Pyroclastic flow
What is the role of oxygen in the fire triangle?
To support the chemical process of combustion
What is the trigger that causes an earthquake to occur?
The abrupt slip on a fault
What is the term used to describe natural events that arise from geologic processes, which can cause significant loss of life, damage to property, and disruption to communities?
Geological hazards
What is the result of the combustion process during a fire?
The generation of combustion products
Test your knowledge on the different types of volcanic debris, including hot gasses, ash, and pumice, and how they can pose hazards due to explosive volcanic activity. Learn about ballistic projectiles and the risks associated with volcanic eruptions. Evaluate your understanding of volcanic gasses and their release during eruptions.
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