Lesson 3, The EDIT Strategy
Passage 2D: Plate Tectonics
The theerie of plate tectonics was developed in the 1960s. lots of new information was gathered
about the nature of the ocean floor, among other things, that contributed to the development a
new theory.
Previous theories of continental drift and seafloor spreading are encompassed in
the plate tectonics theory
The earths outermost layer,or lithosphere, is broken into seven large pieces called plates.
The seven include the african, Australian, antarctic, pacific, North American, South American,
and Eurasian Several minor plates also exist in addition to the seven larger plates? The plates
are always moving at varying speeds. They move anywhere from too centimeters to ten
centimeters per year. There is a lot of activity at the plate boundaries, which is where the plates
meet. since they constantly moving, they can sometimes swipe boundaries, pull apart, or crash
into each other.
A divergent boundary is created win plates pull apart from each other. Whether on land
or in water, this type of boundary causes rift valleys. A convergent boundary created when the
plates crash into each other.This type of boundary typically causes mountains earthquakes, and
volcanoes. A transform bountrie is created when plate boundaries swipe each other. the
transform boundary typically doesn’t have as dramatic of an effect,but it can result in valleys or
streambeds. The sliding moshon also causes earthquakes.
SPELLING
CAPITALIZATION
OVERALL
APPEARANCE
PUNCTUATION
SUBSTANCE
(Missing Word)
Non-Errors
Corrected
Errors
Not Corrected
Percentage of errors corrected:
25 -
=
÷ 25 x 100 =
%
Mastery:
92% or above
(23/25 errors)