29 Questions
What is the definition of a hazard according to the text?
An event that causes harm to the environment, people or the economy
Why do people put themselves at risk according to the text?
All of the above
What is the definition of a natural hazard according to the text?
An event caused by environmental processes
What is the definition of a disaster according to the text?
An event where harm actually occurs to the environment, people or the economy
What is the characteristic of a tropical cyclone according to the text?
All of the above
What is the task given?
Mark the main cyclone origin places
What technology can be used to observe changes in a volcano's shape from a distance?
Satellites
Why do scientists use satellite maps to inspect distant volcanoes?
To calculate the timing of eruptions
How do satellites help authorities prepare for volcanic eruptions?
By enabling advance evacuation of the local population
What is a key reason for increasing the monitoring of volcanoes?
Population growth near volcanoes
What is a significant risk factor prompting the need for advanced volcano monitoring?
Expansion of aviation routes
How do recent technological advancements benefit volcano monitoring?
By developing efficient and accurate monitoring equipment
What instrument do scientists use to precisely measure the angle of a volcano's slope?
Tiltmeters
What could the deformation of ground along a volcanic slope lead to?
Mass wasting events
How do some scientists detect subtle changes in a volcano's shape and slope?
Deploying drones and satellites
Which gas might be released by active volcanoes before magma?
Sulfur dioxide (SO2)
What is the purpose of Light Detection and Ranging (LiDAR) technology in volcano monitoring?
Measuring ground deformation
What is the role of Interferometric Synthetic Aperture Radar (InSAR) in volcano monitoring?
Tracking slight changes in elevation
Why are emergency evacuation drills essential to an evacuation plan?
To provide real-time training opportunities for employees
How often should emergency evacuation drills be practiced according to the text?
Every six months
What is a key requirement for developing a disaster-resilient community?
Motivating people to implement risk-reduction measures
Why do people who have experienced natural disasters recognize the need for preparation?
Due to their memories of the event
What action should be taken if you haven't already done so, according to the text?
Put together an emergency supply
What is the primary purpose of gas monitoring near volcanic vents?
To detect potential eruptions
What type of instrument is used to analyze the concentration of volcanic gases?
Spectrometer
Who first used ground tilt to monitor volcanic activity?
Thomas A. Jaggar
What is a borehole tiltmeter analogous to?
A carpenter's level
What is the purpose of placing a tiltmeter in a sand-filled borehole?
To measure ground tilt and deformation
What can a network of tiltmeters be used to identify?
Sources of inflation or deflation at active volcanoes
Learn about hazards and disasters, their causes, impacts, and categorizations. Understand the difference between natural hazards and disasters, and how they affect the environment, people, and economy.
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