Plate Boundaries Flashcards
What is earth broken up into
Pieces called plates
What creates convection currents
Heat riding and falling inside mantle crest convection currents generated by radioactive decay in core
What do convection currents do
Move plates
What happens when convection currents diverge near earths crust
Plates move apart
What happens when convection currents converge together
Plates move towards each other
What is plate tectonics
Movement of plates and activity inside the earth
What do plate tectonics cause
Earthquakes
Volcanoes
Point where 2 plates meet is called…..
A plate boundary
Where earthquakes and volcanoes most likely occur
On or near plate boundaries
At what plate boundaries of do plates move apart
Tensions
Constructive
Divergent
What plate boundaries do plates mover towards each other
Compressional
Destructive
Convergent
What plate boundaries do plates slide past each other
Conservative
Transform
How tectonic plates move….
- Tectonic plates flow on top of mantle and move around due to convection currents
- Liquid rock in mantle gets heated from core
- Warm material has more Egbert so rises towards surface
- Eventually cools and material sinks as has less energy
- Up down motion called convection currents
The layer where semi molten rock is made
Mantle
The layer made form densest material on earth
Inner core
