TECTONIC HAZARDS

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TECTONIC HAZARDS by Mind Map: TECTONIC HAZARDS

1. WHY area?

1.1. Definition

1.1.1. naturally occurring event

1.2. Explain (Structure of the Earth)

1.2.1. 3 parts (core | mantle | core)

1.3. Tectonic places

1.3.1. what?

1.3.1.1. crust (outermost layer of earth) is broken

1.3.2. why move?

1.3.2.1. Convection currents + Slab-pull force

1.3.3. type of movement?

1.3.3.1. Divergent

1.3.3.1.1. move away

1.3.3.2. Convergent

1.3.3.2.1. move towards

1.3.3.3. Transform

1.3.3.3.1. move past

2. WHAT landforms / tectonic phenomena?

2.1. Landforms

2.1.1. Fold mountains

2.1.1.1. convergent | compressional force => immense pressure

2.1.1.2. location (Himalaya)

2.1.2. Rift valleys & Block mountains

2.1.2.1. divergent | tensional forces

2.1.2.2. rift valley: valley w steep sides

2.1.2.3. location (East African Rift Valley | Hutt Valley)

2.1.3. Volcanoes

2.1.3.1. definition

2.1.3.1.1. convergent & divergent

2.1.3.2. magma chamber | vents

2.1.3.2.1. creservoir of molter rock | openings earth's surface

2.1.3.3. characteristics

2.1.3.3.1. low-silica lava => low viscosity

2.1.3.3.2. high-silica lava => high viscosity

2.1.3.4. formation

2.1.3.4.1. shield volcanoes

2.1.3.4.2. stratovocanoes

2.1.3.5. distribution

2.1.3.5.1. Pacific Ring of Fire

2.2. Phenomena

2.2.1. Earthquakes

2.2.1.1. definition

2.2.1.1.1. vibration

2.2.1.2. type

2.2.1.2.1. deep-focus earthquake

2.2.1.2.2. shallow-focus earthquake

2.2.1.3. extent (5)

2.2.1.3.1. population density

2.2.1.3.2. level of preparedness

2.2.1.3.3. distance from the epicentre

2.2.1.3.4. time of occurrence

2.2.1.3.5. type of soil

2.2.1.4. location

2.2.1.5. measuring

2.2.1.6. risks of living (6)

2.2.1.6.1. tsunamis

2.2.1.6.2. disruption of services

2.2.1.6.3. landslides

2.2.1.6.4. destruction of infrastructure

2.2.1.6.5. loss of lives

2.2.2. volcanic eruptions

2.2.2.1. active/ dormant/ extinct volcanoes

2.2.2.2. risks of living (2)

2.2.2.2.1. massive destruction

2.2.2.2.2. pollution

2.2.2.3. benefit (3)

2.2.2.3.1. fertile soil

2.2.2.3.2. stones & minerals

2.2.2.3.3. tourism

3. HOW people prepare

3.1. preparedness measures (4)

3.1.1. land use regulation

3.1.1.1. rules to restrict developments

3.1.2. infrastructure

3.1.2.1. advanced engineering

3.1.3. emergency drills

3.1.4. warning systems

3.1.4.1. earthquare

3.1.4.2. tsunami

3.2. short-term responses (2)

3.2.1. last for weeks

3.2.1.1. search & rescue

3.2.1.2. emergency/food/medical supplies

3.3. long-term responses (2)

3.3.1. over months & years

3.3.1.1. rebuilding of infrastructure

3.3.1.2. provision of health care