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Science Starter
What is an index fossil?
What is an example of an organism that is an index fossil?
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Science Starter
An index fossil is an organisms that lived during a
relatively short, well-defined geologic time span AND are
found in rock layers throughout the world
Trilobites and ammonites are examples of index fossils
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Continental Drift
8th Grade Science: Ms. Dale
Read pages 136-140 and fill out the
Drifting Continents WS
Continental Drift and Alfred
Wegener
https://www.youtube.com/watch?
v=_5q8hzF9VVE&spfreload=10
Notes Interactive
We will cut and glue these
onto blank paper in our
notebook.
Please look at the example in
front of the class.
Alfred Wegener
German meteorologist and
geophysicist who developed the
continental drift theory
He proposed the theory in 1915
Wegener used four pieces of
evidence to support his theory
The Continental Drift Theory
A theory that states that parts of
the Earth’s crust drift atop a liquid
core (conduction currents in the
mantel)
Pangea
Is a gigantic supercontinent that
existed 200 million years ago.
Means “all earth” in Greek
Evidence In Favor of the
Continental Drift Theory
1. Continents fit together like a
puzzle
4
2. The same fossils were found
where pieces fit together (fossil
correlation)
3. Similar landforms found on each
continent (rock and mountain
correlation)
4. Past climate data
Continents Fit Together Like A
Puzzle
Fossil Correlation
Rock and Mountain Correlation
Past Climate Data
Bituminous coal are fossil fuels found in tropical areas,
but we find it in Antarctica which is evidence of a past
tropical climate.
Read Pages 200-203 and complete the
Volcanoes and Plate Tectonics Worksheet