157
FRACTURED GLOBE ▶
The plates fit together to form the
globe. Some plates are moving apart
at divergent boundaries, but the world
never gets bigger because the fringes
of other plates are being destroyed
at convergent boundaries. The
relative movement of the Pacific,
Cocos, and Caribbean plates
shows how the plate boundaries
are formed.
3
Transform boundaries
These form
where two plates are sliding past
each other. This causes frequent
earthquakes along the fault line,
but few volcanoes.
Plates grind and
snap, causing
Earthquakes
Land features
displaced by plate
movement
Plate boundary
indicated by
fault line
Pacific plate slides
along transform
boundary of San
Andreas Fault
Plates pull apart at
East Pacific Rise, a
divergent boundary
Cocos plate pushes
beneath Caribbean plate
at convergent boundary
North American
plate
South
American plate
Pacific plate
Nazca plate
Cocos plate
Caribbean plate
156_157_Tectonics.indd 157 03/01/19 12:10 PM