This is Big Ideal 8: Natural hazards pose risks to humans. Natural hazards result from natural earth processes. These hazards include earthquakes, tsunamis, hurricanes, floods, drought, landslides, volcanic eruptions, extreme weather, fire started by lightning, sinkholes, coast erosion, and impacts from asteroids.Natural hazards shaped the history of human societies.
Has this events can have a great impact on humans? They can change the size of human populations, and drive human migrations. As populations move into mandible areas like coastlines, or concentrate in areas that already inhabited, risks from natural hazard’s increase. Human activities can contribute to the frequency and intensity of some natural hazards. This has it’s include floods, and landslide, droughts, forest fires and erosion.
Has this events can be sudden or gradual? The range from sudden events such as earthquakes an explosive volcanic eruptions, to phenomena such as droughts which may last decades or even longer. Human populations can be at risk from continually process such as, erosion and land subsidence. One example is the increased risk of flooding in New Orleans.
Natural hazards can be local or global in origin. Local events can have distant impacts. This is because of the interconnected nature of both human societies and earth systems. For example, a volcanic eruption in the Pacific Ocean can affect climate around the globe. Geoscientists are continually improving estimates of when and where Natural Hazards occur. This enhances is done through continuously monitoring earth. Increasing our understanding of the physical processes that underlie this changes. And developing scientific models that can explain hazard related scientific observations.
Humans cannot eliminate natural hazards, but can engage in activities that reduce their impact. Actual hazards can result in loss of life, property damage and economic costs.Humans can reduce these effects by identifying and avoiding high-risk locations, improving construction methods with a do lift, developing warning systems and recognizing how human behavior affects how people prepare for and respond to natural hazards
An Earth Science Literacy Public is essential for reducing risks from natural hazards. This literacy leads to promoting community awareness about natural hazards and developing scientific re-inform policies that reduce risks. And that’s Big Ideal 8: Natural hazards pose risks to humans.