What natural hazards do we face, and how can Earth science reduce the risk?
Describe major natural hazards (earthquakes, volcanoes, severe weather, floods) and explain how forecasting, monitoring and preparedness use Earth science to reduce their impact on society.
A Regents answer on natural hazards and society: the main geologic and weather hazards (earthquakes, volcanoes, hurricanes and severe storms, floods), why they cluster in certain places, and how Earth science (forecasting, monitoring, hazard maps, warning systems and preparedness) reduces their impact, for the Earth and Space Sciences exam, with worked exam questions.
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What this topic is asking
The Regents (and the new Earth and Space Sciences exam under ESS3) wants you to describe major natural hazards and to explain how Earth science reduces their impact through forecasting, monitoring, hazard maps, warning systems and preparedness. The key idea is that hazards are not random: knowing where and why they occur lets us prepare.
The major natural hazards
Why hazards cluster where they do
How Earth science reduces the impact
Earth science cannot prevent natural events, but it reduces their toll:
- Forecasting: meteorologists predict hurricanes, severe storms and floods days ahead from weather data and models, giving time to prepare.
- Monitoring: instruments watch for warning signs, seismographs record quakes, satellites and gauges track storms and river levels, and volcano monitoring (gas emissions, ground swelling, small quakes) can signal an eruption.
- Hazard maps: showing high-risk zones (fault lines, floodplains, lahars) so communities can avoid building there or reinforce structures.
- Warning systems: sirens, alerts and evacuation orders move people out of harm's way.
- Preparedness: building codes for earthquakes, levees and barriers for floods, drills, supplies and emergency plans.
This is Earth science in service of society, the heart of the new exam's ESS3 (Earth and Human Activity) emphasis.
Try this
Q1. Explain why earthquakes and volcanoes are concentrated in certain regions. [2 points]
- Cue. They cluster along tectonic plate boundaries, where plates interact, releasing energy and allowing magma to rise.
Q2. Describe one way Earth science reduces the impact of a natural hazard. [2 points]
- Cue. Any valid example: forecasting severe weather, monitoring for warning signs, hazard maps of high-risk zones, warning and evacuation systems, or preparedness such as building codes and levees.
Exam-style practice questions
Practice questions written in the style of NYSED exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Regents (style)1 marksPart A. Earthquakes and volcanoes are most common (1) randomly all over Earth (2) near the centers of tectonic plates (3) along tectonic plate boundaries (4) only in the oceans. Justify your choice.Show worked answer →
A 1-point multiple-choice question. The answer is (3).
Earthquakes and volcanoes cluster along tectonic plate boundaries, where plates collide, pull apart or slide past one another, releasing energy and allowing magma to rise (for example the Ring of Fire). They are not random (1), not centered in plate interiors (2), and not confined to the oceans (4). The trap is thinking hazards are randomly spread; their locations are predictable from plate boundaries, which is why hazard maps work.
Regents (style)3 marksPart C. (a) Explain why a hazard map of earthquake risk can be drawn before any earthquake happens. (b) Describe one way monitoring helps reduce the impact of a volcanic eruption. (c) Describe one preparedness action a community in a flood-prone area can take.Show worked answer →
A 3-point extended-response question.
(a) 1 point: earthquakes cluster along known tectonic plate boundaries and fault lines, so the areas of highest risk are predictable from geology, even though the exact timing is not.
(b) 1 point: monitoring (seismographs, ground deformation, gas emissions) can detect the warning signs of an eruption, allowing authorities to issue warnings and evacuate people in time.
(c) 1 point: any valid action, for example building levees or flood barriers, restricting building on floodplains, improving drainage, creating early-warning systems, or preparing evacuation plans.
Markers reward the plate-boundary basis for hazard maps, a valid monitoring-to-warning link, and a realistic flood-preparedness measure.
Related dot points
- Explain how human activities (pollution, deforestation, land use, resource extraction) affect Earth's atmosphere, hydrosphere, geosphere and biosphere, and evaluate ways to reduce harm.
A Regents answer on human impact: how pollution, deforestation, land use and resource extraction affect the atmosphere, hydrosphere, geosphere and biosphere, examples such as air and water pollution, soil erosion and habitat loss, the idea of Earth's interconnected systems, and how to evaluate solutions, for the Earth and Space Sciences exam, with worked exam questions.
- Explain the greenhouse effect and the role of greenhouse gases, distinguish natural from human-enhanced climate change, and describe the evidence for and consequences of recent global warming.
A Regents answer on the greenhouse effect and climate change: how greenhouse gases (carbon dioxide, methane, water vapor) trap outgoing infrared energy and warm the surface, natural versus human-enhanced warming from burning fossil fuels, the evidence (rising carbon dioxide and temperature, melting ice, rising seas) and consequences, with worked exam questions.
- Explain how P-waves and S-waves behave and use the Reference Tables earthquake travel-time graph to find the distance to an epicenter, the origin time and the number of stations needed to locate it.
A Regents answer on earthquakes and seismic waves: P-waves and S-waves and how they differ, the Reference Tables P-wave and S-wave travel-time graph, finding the distance to an epicenter from the S-minus-P time, finding the origin time, why three stations are needed, and how the S-wave shadow zone reveals a liquid outer core, with worked exam questions.
- Explain where and why volcanoes form (boundaries and hot spots), describe how crustal rock is deformed by folding, faulting and tilting, and interpret evidence of crustal movement such as displaced rock layers and marine fossils on mountains.
A Regents answer on volcanoes and crustal deformation: why volcanoes form at subduction zones, divergent boundaries and hot spots, the Ring of Fire, how rock is folded, faulted and tilted, and the evidence that the crust has moved (displaced strata, tilted layers, marine fossils and rounded sediments now on mountains), with worked exam questions.
- Classify air masses, describe the weather at warm and cold fronts and around high- and low-pressure systems, and interpret weather maps and the Reference Tables station model.
A Regents answer on weather systems: how air masses are classified (maritime/continental, tropical/polar), the weather at cold and warm fronts, high-pressure (clear, sinking, diverging) versus low-pressure (cloudy, rising, converging) systems, the typical west-to-east movement across New York, and how to decode the Reference Tables weather station model, with worked exam questions.
Sources & how we know this
- Earth and Space Sciences — New York State Education Department (2026)
- Regents Examination in Physical Setting/Earth Science — New York State Education Department (2026)