Tectonic Hazards

What are Divergent Margins characterized by?

Divergent Margins are characterized by tectonic plates moving apart, shallow-focus earthquakes, and sea-floor spreading.

What is the process that occurs at Convergent Margins?

The process of subduction occurs at Convergent Margins, where one tectonic plate sinks below another.

What is a key feature of Conservative Margins?

Conservative Margins, also known as transform boundaries, involve tectonic plates sliding past one another without creating or destroying lithosphere.

What are Intra-Plate Earthquakes?

Intra-Plate Earthquakes occur away from tectonic plate boundaries and often reactivate ancient fault lines.

What causes Hotspot Volcanoes?

Hotspot Volcanoes are caused by mantle plumes, which are columns of hot material rising from deep within the Earth.

What does the Theory of Plate Tectonics explain?

The Theory of Plate Tectonics explains the movement of the Earth's lithosphere, which is divided into several tectonic plates.

What is the significance of the Mantle Convection in plate tectonics?

Mantle Convection is significant because it drives the movement of tectonic plates due to heat generated from radioactive decay.

What is the definition of a natural hazard?

A natural hazard is an event with the potential to harm people and property.

What does the Degg Model illustrate?

The Degg Model illustrates the intersection of hazards and vulnerable populations, leading to disasters.

What were the impacts of the 2010 Haiti earthquake?

The impacts included approximately 160,000 deaths and significant destruction due to poor socio-economic conditions.

What is the Volcanic Explosivity Index (VEI)?

The Volcanic Explosivity Index (VEI) measures the magnitude of volcanic eruptions on a scale from 0 to 8.

What role does Governance play in disaster preparedness?

Governance plays a role in ensuring community resilience and effective disaster management through land-use planning and resource allocation.

What is a characteristic of a high-risk hazard?

A characteristic of a high-risk hazard is high magnitude and low frequency, often leading to severe impacts.

How do secondary hazards from earthquakes affect recovery?

Secondary hazards like landslides and tsunamis can exacerbate the impacts of an earthquake, complicating recovery efforts.

What is the focus of the hazard management cycle?

The hazard management cycle focuses on the stages of response, recovery, mitigation, and preparedness for natural disasters.

What are the key components illustrated by the Pressure and Release (PAR) Model?

The PAR Model identifies root causes, dynamic pressures, and unsafe conditions that lead to disasters.

What influences vulnerability and coping capacity during disasters?

Factors such as age, socio-economic status, and community preparedness influence vulnerability and coping capacity.

What impact does population density have during disasters?

High population density complicates evacuation and increases the potential for casualties during disasters.