Living With Tectonic Hazard

by SuperMario
Last updated 4 years ago

Social Studies

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Living With Tectonic Hazard

The crust is the outermost layer on Earth. It occupies less than 1% of Earth's volume. Oceanic crust are crust under the ocean. Continental crust are crust under the continent. The crust is 6 to 70km thick.The mantle is above the core and under the crust. It occupies 80% of the Earth's volume. It is around 2900km thick and made up of solid rock flowing under high temperature from 800 to 3000 degree celsius and pressure.The core is the innermost layer on Earth. It is around 3300 km thick and made up of iron and nickel. It is around 3000 to 5000 degree celsius hot.

Natural Hazards are events that can kill people and destroy properties which occurs naturally. It is also called natural disaster. It is either caused by tectonic plate movements or extreme climate.

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The crust is broken into pieces known as tectonic plates. Oceanic crust are crust beneath deep oceans. It ranges from 5km to 8km. It is made up of heavier and denser rock known as basalt that cool down quickly. It is formed less than 200000000 years ago. Continental crust are crust beneath the Earth's continents. It ranges from 30km to 70km. It is made up of lighter rocks known as granite. It is formed from recent to 4000000000 years ago Plate tectonics move because of convcection currents in the mantle. The core will heat up the mantle and there will be a convection current in the mantle. The plates will be dragged along with the mantle and move. When a denser oceanic plate is forced beneath a less denser plate, a slab-pull force occur. This is known as subduction. The subducting plates will be pulled down into the mantle

Fatalistic approach is when people accept earthquakes as inevitable events and may resist evacuation when it strucks. It is common in undeveloped countries which does not have much access to other places. Acceptance approach is when people decide to live in earthquake-prone areas because living there has more advantage. It is common in developed countriesAdaptation approach is when people live in the earthquake-prone areas because they are well-prepared for earthquakes. The adaptation approach is expensive but the best approach to save people and properties when an earthquake strucks.

People's approach to earthquakes

Fold mountains are formed when two plates converge together and collide. The compressional force makes pressure which force the layer of rocks to fold and buckle. This is known as folding. An example of a fold mountain is the HimalayasFolding is common in sedimentary rocks as they are more flexible than igneous or metmorphic rocks.



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