Reduce Hazard Risk - Middle School Earth and Space Science
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What building technology reduces earthquake shaking damage by decoupling a structure from the ground?
What building technology reduces earthquake shaking damage by decoupling a structure from the ground?
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Base isolation. Flexible bearings let buildings move independently from shaking ground.
Base isolation. Flexible bearings let buildings move independently from shaking ground.
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Which technology detects ash clouds to protect aircraft during volcanic eruptions?
Which technology detects ash clouds to protect aircraft during volcanic eruptions?
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Satellite and radar ash detection systems. Ash detection helps reroute flights away from dangerous volcanic clouds.
Satellite and radar ash detection systems. Ash detection helps reroute flights away from dangerous volcanic clouds.
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What is the main purpose of an early warning system for natural hazards?
What is the main purpose of an early warning system for natural hazards?
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To alert people early so they can take protective action. Early detection allows evacuation and preparation before hazards strike.
To alert people early so they can take protective action. Early detection allows evacuation and preparation before hazards strike.
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What technology is most directly used to detect and locate earthquakes quickly?
What technology is most directly used to detect and locate earthquakes quickly?
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Seismometer networks. Networks of sensors detect seismic waves and triangulate earthquake locations.
Seismometer networks. Networks of sensors detect seismic waves and triangulate earthquake locations.
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What is the key benefit of earthquake early warning alerts?
What is the key benefit of earthquake early warning alerts?
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Seconds of warning to reduce injuries and damage. Even brief warnings let people drop, cover, and stop machinery.
Seconds of warning to reduce injuries and damage. Even brief warnings let people drop, cover, and stop machinery.
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Which technology is used to track hurricanes over oceans in near real time?
Which technology is used to track hurricanes over oceans in near real time?
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Weather satellites. Satellites provide continuous ocean coverage where ground stations can't reach.
Weather satellites. Satellites provide continuous ocean coverage where ground stations can't reach.
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What technology measures wind speed and precipitation inside storms to improve forecasts?
What technology measures wind speed and precipitation inside storms to improve forecasts?
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Doppler radar. Radar bounces signals off precipitation to measure storm intensity and movement.
Doppler radar. Radar bounces signals off precipitation to measure storm intensity and movement.
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Which technology uses ground sensors to monitor rising water levels in rivers?
Which technology uses ground sensors to monitor rising water levels in rivers?
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Stream gauges (river gauges). Real-time water level data helps predict downstream flooding.
Stream gauges (river gauges). Real-time water level data helps predict downstream flooding.
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What is the main risk-reduction role of levees and floodwalls?
What is the main risk-reduction role of levees and floodwalls?
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They keep floodwater from entering protected areas. Physical barriers block water from reaching vulnerable areas.
They keep floodwater from entering protected areas. Physical barriers block water from reaching vulnerable areas.
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Which building technology strengthens structures against earthquakes by adding energy-absorbing supports?
Which building technology strengthens structures against earthquakes by adding energy-absorbing supports?
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Shear walls and dampers. These systems absorb and dissipate earthquake energy within buildings.
Shear walls and dampers. These systems absorb and dissipate earthquake energy within buildings.
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Identify the technology that reduces wildfire risk by detecting fires early from above.
Identify the technology that reduces wildfire risk by detecting fires early from above.
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Satellite and aerial thermal imaging detection. Heat signatures reveal fires before they grow large and uncontrollable.
Satellite and aerial thermal imaging detection. Heat signatures reveal fires before they grow large and uncontrollable.
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Which communication technology rapidly spreads hazard alerts to many people at once?
Which communication technology rapidly spreads hazard alerts to many people at once?
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Cell broadcast and emergency alert systems. Mass messaging reaches entire populations instantly during emergencies.
Cell broadcast and emergency alert systems. Mass messaging reaches entire populations instantly during emergencies.
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Which technology reduces storm-surge damage by absorbing wave energy along coasts?
Which technology reduces storm-surge damage by absorbing wave energy along coasts?
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Engineered seawalls and surge barriers. Barriers deflect and dissipate wave energy before it reaches inland areas.
Engineered seawalls and surge barriers. Barriers deflect and dissipate wave energy before it reaches inland areas.
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What technology helps detect tsunamis in the open ocean before they reach shore?
What technology helps detect tsunamis in the open ocean before they reach shore?
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Deep-ocean pressure sensors and buoy systems. Pressure changes from tsunami waves trigger alerts hours before landfall.
Deep-ocean pressure sensors and buoy systems. Pressure changes from tsunami waves trigger alerts hours before landfall.
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Which technology is used to map hazard zones and guide safer land-use planning?
Which technology is used to map hazard zones and guide safer land-use planning?
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GIS hazard mapping. Maps show high-risk areas to avoid for development and evacuation planning.
GIS hazard mapping. Maps show high-risk areas to avoid for development and evacuation planning.
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What technology provides precise ground elevation data useful for flood and landslide maps?
What technology provides precise ground elevation data useful for flood and landslide maps?
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LiDAR (laser mapping). Laser pulses create detailed elevation models for hazard assessment.
LiDAR (laser mapping). Laser pulses create detailed elevation models for hazard assessment.
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What technology uses satellites to measure surface deformation near volcanoes?
What technology uses satellites to measure surface deformation near volcanoes?
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InSAR satellite radar. Radar detects ground swelling that indicates rising magma.
InSAR satellite radar. Radar detects ground swelling that indicates rising magma.
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Which option best reduces landslide risk on a steep slope: A) add vegetation B) remove vegetation?
Which option best reduces landslide risk on a steep slope: A) add vegetation B) remove vegetation?
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A) Add vegetation to stabilize soil and reduce erosion. Plant roots bind soil and absorb water, preventing slope failure.
A) Add vegetation to stabilize soil and reduce erosion. Plant roots bind soil and absorb water, preventing slope failure.
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What is the main purpose of an early warning system for natural hazards?
What is the main purpose of an early warning system for natural hazards?
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Provide timely alerts so people can take protective action. Early detection allows evacuation and preparation before hazard strikes.
Provide timely alerts so people can take protective action. Early detection allows evacuation and preparation before hazard strikes.
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What technology is used to locate earthquakes and estimate their magnitude quickly?
What technology is used to locate earthquakes and estimate their magnitude quickly?
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Seismometer networks with real-time data processing. Multiple sensors triangulate quake location and measure wave amplitude.
Seismometer networks with real-time data processing. Multiple sensors triangulate quake location and measure wave amplitude.
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Which earthquake technology can automatically slow trains and shut off gas lines?
Which earthquake technology can automatically slow trains and shut off gas lines?
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Earthquake early warning systems. P-wave detection triggers automated safety responses before S-waves arrive.
Earthquake early warning systems. P-wave detection triggers automated safety responses before S-waves arrive.
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What technology measures ground movement to monitor volcano inflation and deflation?
What technology measures ground movement to monitor volcano inflation and deflation?
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GPS ground stations. Precise positioning detects millimeter-scale surface changes from magma movement.
GPS ground stations. Precise positioning detects millimeter-scale surface changes from magma movement.
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What remote-sensing technology maps ground deformation around volcanoes from space?
What remote-sensing technology maps ground deformation around volcanoes from space?
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InSAR (satellite radar interferometry). Compares radar images to detect centimeter-scale ground surface changes.
InSAR (satellite radar interferometry). Compares radar images to detect centimeter-scale ground surface changes.
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What technology detects ash clouds to reduce aviation risk during volcanic eruptions?
What technology detects ash clouds to reduce aviation risk during volcanic eruptions?
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Satellite and radar ash-cloud monitoring. Prevents aircraft from flying through dangerous volcanic ash plumes.
Satellite and radar ash-cloud monitoring. Prevents aircraft from flying through dangerous volcanic ash plumes.
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Which technology helps predict hurricane paths and intensity using large data sets?
Which technology helps predict hurricane paths and intensity using large data sets?
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Numerical weather prediction computer models. Simulates atmospheric conditions to forecast storm development and movement.
Numerical weather prediction computer models. Simulates atmospheric conditions to forecast storm development and movement.
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