Download Continental Drift

Continental Drift
FOR THE TEST: STUDY POWER POINT AND PAGES LISTED IN
THE POWER POINT
Fossils
Fossils are evidence of:
1)
Organisms evolution and common
ancestry
2)
Theory of Continental Drift
Continental drift
 Responsible
for geographic isolation of populations
 Because
of the separation and movement of the
continents, organisms that were part of the same
population had to evolve to the new conditions,
generating new species over time.
 The
new species inhabit different areas but had a
common ancestor.
Video:
 Continental Drift
 Michael Sammartano
 https://www.youtube.com/watch?v=_5q8hzF9VVE
Continental Drift book page 182
Explain Continental Drift
2) What is Pangea what does the word
Pangea mean?
3) What are the evidences of
Continental Drift?
1)
Continental Drift book page 182
1) Explain Continental Drift
Theory that explains that continents were
once connected in a huge mass that
separated in different parts. The different
parts moved slowly to the positions where
the actual continents are.
Continental Drift book page 182
2) What is Pangea what does the word
Pangea mean?
Pangea means “all land” and it is the name
of the ancient mass of land that broke into
the different continents
Continental Drift book page 183
3) What are the evidences of Continental Drift?
-
The shape of the continents ( fit like a puzzle) pg
183
-
Rock structures – similar rock structures are found
in different continents suggesting that these
continents were once connected.
Fossils – fossils of similar species ( animals or plants)
are found in different continents, separated by
oceans, suggesting that these continents were
once connected. (page 183)

Climate clues:
A)Fossils of tropical plants and coal found in
very cold areas show that the continents
moved from the tropics to positions closer to
the poles
B)Evidence of glaciers found in tropical areas, show that
the continents were once covered in ice and could
have moved from being closer to the poles to their
actual position
What
causes Continental Drift?????
Layers of the Earth:
to understand why
continents move, we
need to know more
about the layers of the
Earth
Layers of the Earth
What are plate tectonics? Book page 190
 The
theory of Plate Tectonics states that the
surface of the Earth is broken into sections
called plates tectonics.
 The
lithosphere (the crust and the solid upper
mantle ) is broken into the different plates, that
move around on the asthenosphere.
 Fig
 Fig
8 page 190
9 in the book shows the different plate
tectonics
What causes continental drift?
 Tectonic
plates move due to convection
movement of the magma inside the Earth – fig 12
page 195
 Continental
drift has continuously occurred
throughout time, and continues to do so today.