JC Revision Flashcards
Significant weather event
Hurricane Katrina, 7 days, 23 - 30 August 2005, 1800 killed, thousands were forced to move, US
Structure of the Earth
inner core, outer core, mantle, crust
How volcanoes are formed
pressure beneath earth, mantle goes up and erupts
Boundaries + diagram
separating-constructive, colliding-destructive, sliding-conservative/transport
Volcano stages
active, dominant, extinct
Why are earthquakes happening
movement of tectonic plates - colliding or sliding
Earthquake example
Alaska, 2002, 10 people killed, lots of people had to move, 20 mill bucks
Tsunami example
Japan, 2011, more than 18000 people were killed, 6000, 300000 houses, injured, clean-up operation will take 40 years and 200 bill bucks to recover
Rock formation
atoms are called elements - minerals - rocks
Groups of rocks
igneous: granite-intrusive, obsidian-extrusive; metamorphic, sedimentary
Soils
minerals, water, air, humus, living organisms
Soils horizons
A upper layer, B subsoil, C parent rock
Irish most common soils
brown earth, peaty, gley, podzol
Weathering is
breaking of rocks over time
Types of weathering
mechanical, chemical, biological
