Plate Tectonics

Continental Drift

Boundaries

Hot spots

How?

Evidence

Plates move acrosss the earths crust

fossils match

Continents fit like a puzzle

ancient climates

geologic units match

Convergent

Divergent

Transform

Effects

Two plates slide past each other

Mountains

Valcanos

Earthquake

composite Valcano

cinder cone

shield volcano

Types

When two plates move towards each other

Oceanic-continental : Island arcs

Oceanic-oceanic : Volcano makers

Continental-continental: mountain makers

Only place where new crust is formed

The plates move away from each other

glacial climates

Coal deposites

Africa fits into South America