Tectonics Flashcards
(31 cards)
At what plate does the oceanic plate subduction the continental plate
Convergent
What plates are in a collision boundary
O&O or c&c
Describe a conservative boundary
Plates moving in either different directions or the same direction at different speeds
Describe a divergent plate boundary
Two plates move apart
What plates are at a divergent boundary
0&0 or c&c
What plates are at a conservative boundary
2 of 1
What features does a collision boundary produce
Mountain ridges
What features does a convergent boundary produce
Strato volcano, ocean trench, earthquake, tsunamis
What features does a conservative boundary produce
EQ, tsunamis
What features does a divergent boundary produce
Shield volcano, rift valley
Describe a collision boundary
Two plates collide and move upwards
Temp of inner core
6000+
Inner core consist of
Balls of iron and nickel
Why can’t inner core melt
Too hp
Temp of outer core
4500 to 5500
Outer core consists of
Liquid iron and nickel
Word to describe the mantle
Ductile
How thick is the mantle
2900 km
Mantle temp
2100 to 3700
Why do tectonic plates move
Convection currents
Explain convection currents
Rock heated in mantle, rises towards crust, cools as it rises. When it reaches lithosphere it’s forced sideways, further cools causing it to drop back down towards core
What does a tilt meter measure
Measures any bulges suggesting magma rising
What does a seismometer measured
How much the volcano shakes or moves
What are the main gases in a volcano
CO2 and sulfur dioxide
