The Internal Structure of Earth (Grade 10 NSC Matric Geography): Flashcards
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Geomorphology definition
Geomorphology definition
Scientific study of Earth's physical features & processes
Oceanic crust thickness
Oceanic crust thickness
5-10 km
Continental crust thickness
Continental crust thickness
35-70 km
% of Earth's volume the mantle makes up
% of Earth's volume the mantle makes up
80%
Depth extent of the mantle
Depth extent of the mantle
Surface to 2,900 km depth
Outer core composition
Outer core composition
Iron and nickel
State of outer core
State of outer core
Liquid (molten)
Inner core temperature
Inner core temperature
Approximately 5,000°C
Why inner core is solid despite extreme heat
Why inner core is solid despite extreme heat
Extreme pressure from layers above
Convection currents in mantle
Convection currents in mantle
Circular movement of hot rock driven by extreme heat