Download Plate tectonics ch. 7

Ch. 7 Notes- Plate Tectonics
•Plate Tectonics
• Theory that explains how
large pieces of the Earth’s
outermost layer move
and change shape
What are examples of tectonic plates?
(hint there are 10 total)
Answer: Cocos plate, North American plate,
African plate, Indian plate, Eurasian plate, etc.
•Convergent
boundary
• The boundary formed
by the collision of two
lithospheric plates
•Divergent
Boundary
• The boundary
between two tectonic
plates that are moving
away from each other
•Transform
boundary
• The boundary
between tectonic
plates that are sliding
past each other
horizontally
What type of plate boundary do you think
mountains are formed at? Why?
It’s not my fault!!!
•Fault
• A break in a body of
rock along which one
block slides relative to
another
By looking at the picture below, what do
you think occurs along a fault? Why?
•Compression
• Stress that occurs
when forces act to
squeeze an object
Which layer of the earth undergoes a lot
of compression? Why?
•Tension
• Stress that occurs
when forces act to
stretch an object
Can you think of some examples of
tension??
•Folding
• The bending of rock
layers due to stress
•Uplift
• The rising of regions of
the Earth’s crust to
higher elevations
•Subsidence
• The sinking of regions
of the Earth’s crust to
lower elevations