GEOGRAPHY UNIT 7 NOTES1

Apuntes

UNIT 7 GEOGRAPHY NOTES GEOGRAPHY UNIT 7 NOTES: folds: can be 2 types: anticline( like a mountain ) with covex shape or syncline ones with concave shape Faults: crack on the earth's crust caused by de movement of the tectonic plates, the 2 parts are: horst( the upper one because it's lighter) and graben( the lowest one because is heavier) VOLCANOES: types: - active: sometimes erupt - dormant: inactive several hundred years - extinct: inactive several thousand years how volcanoes can change the relief: - mountains formed by the accumulation of expelled substances - islands formed by the accumulation of expelled substances like canary islands or japanese archipelago process of eruption: 1- magma is subjected to intense pressure inside the Earth 2- this pressure can push the magma up through the vent and out of the crater 3-the volcano expels solid materials ( ash, rocks ), viscous ones (lava) and different types of gases EARTHQUAKES: formation: 1- two plates collide 2- one tectonic plate slides over the another 3- energy accumulates when one of the plates in unable to move 4- one plate suddenly moves over another. This causes the plate to fracture Parts: - epicentre: point on the Eart...