Tectonics Flashcards
What is a conservative plate boundary?
Where two plates slide past each other
What is a constructive plate boundary?
Where two plates move away from each other, leaving a gap that is filled by magma, forming new crust.
What is a destructive plate boundary?
Where an oceanic and continetal plate move together slowly and the oceeanic plate sinks below the lighter continental crust.
Give an example of a conservtive plate boundary
The San Andreas Fault
Give an example of a constructive plate boundary
Mid Atlanic Bridge
Give an example of a destructive plate boundary
Nazca plate sinking below the South American Plate
What are the dangers of living on a conservative plate boundary?
Earthquakes are frequent
What are the hazards of living at a constructive plate boundary?
Normally under water
Magma moving at surface
Volcanoes
Gaps in the ground opening up
What are the hazards of living at a destructive plate boundary?
Earthquakes, magma eruptions
Name three advantages of living in a tectonically active area
Fertile soil
Tourism
May not be an issiue
Name 3 disadvantages of living in a tectonically active area
Frequent destruction
Unpredictable tectonic activity
People die
Give 3 social effects of living in a tectonically active area
Family members or friends could die
Must remain alert for hazards
Disruption to productivity and education
Give 3 environmental effects of living in a tectonically active area
Pollution
More fertile soil (Volcano)
Pollution
Give 3 economic effects of living in a tectonically active area
High cost to repair damage
High cost to hazard-proof facilities
Lost productivity in aftermath
What is the difference between magma and lava
Lava is always underground: magma is always above ground
