Geography Assessment 1 - Natural Hazards 0.0 / 5 ? GeographyNatural hazardsGCSEAQA Created by: mhghhhhhCreated on: 25-03-21 14:10 Define a natural hazard An event which damages people or property 1 of 12 4 types of natural hazard - Tectonic - Atmospheric - Biological - Geomorphological 2 of 12 What are the 4 factors affecting hazard risk? - Development of the country - Frequency - Magnitude - Population density 3 of 12 Plate Tectonics Theory - Earths outer shell is divided into plates, which float over the mantle 4 of 12 What is the name given when two plates move towards each other Destructive margin 5 of 12 What happens at destructive plate margin between 2 different crusts? - Oceanic plate meets a continental plate - Denser oceanic plate forced down into the mantle - Creates volcanoes + ocean trenches 6 of 12 What happens at a destructive plate margin between continental crusts? - Two continental plates meet - They collide, and the ground is forces upwards -Mountain range is formed 7 of 12 What is the name given when two plates are moving away from one another? Constructive Margins 8 of 12 What happens at constructive plate boundaries? - magma rises from the mantle, to fill the gap - It cools, creating a new crust. 9 of 12 What is the name given when 2 plates slide past each other? Conservative Margin 10 of 12 What happens at a conservative margin? Plates move past each other in either opposite directions, or at different speeds, causing friction. 11 of 12 Which is denser; Oceanic crust or Continental crust Oceanic Crust. 12 of 12
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