Plate Tectonics Day 4
• Just for fun Scrat and Continental Drift-Ice
Age 4
• Pangaea’s Moving Farther Apart Again
Song
• The Continental Drift Song (Breaking Up Is
Hard to Do)
Who proposed the theory of Continental Drift?
Answer IS...(click here)
What is the process which causes the plates to
move?
Push together
Do the convergent Kung Fu
Panda move put your palms
together and rise.
What is formed? Sometimes
one plate slips under the
other in subduction. Do this
move with your hands.
Plates pull apart.
Put your hands over
your head and pull
apart.
Effects of crustal plate movement!
Boundary between two plates that
are sliding past each other
EARTHQUAKES occur along
faults
Faults are breaks in the Earth’s crust where
rocks have slipped past each other.
Slide Sideways
Slide Sideways
two plates grind together past each other
often causing earthquakes.
Ex. San Andreas Fault (California)
http://www.classzone.com/books/earth_science/terc/content/
visualizations/es0804/es0804page01.cfm?chapter_no=visuali
zation
San Andreas Fault in California
Mrs. Burns used to live a few
miles from the San Andreas
fault. Her husband looked at
it out his office window at
work. Palm trees grow along
the fault line. This picture is
taken from high up in space.
Click the pic
Snap your fingers and
observe what is happening.
When you snap your fingers, imagine that each
finger is a big chunk of rock deep inside the
Earth’s surface. Like your fingers, one rock mass
is forced against another.
Earthquake Destruction-click
Writing Reflection (in notebook):
Why do earthquakes in other countries seem to cause
more damage and casualties than earthquakes in the
US? What can Americans do about it?
Rain to write to
Where do earthquakes occur?
What happens when you throw a rock into water?
Why does it ripple? How far do the ripples
continue? How might this relate to Earthquakes?
VIBRATIONS
An instrument called a
seismograph records tectonic
plate movement.
A seismologist is a scientist
that studies earthquakes.
Aftershocks are smaller vibrations after a large
earthquake
Transform Fault
Divergent
Convergent