The Beginning
Supporting Evidence
Claim and Evidence
Diagrams
Diagrams 2
100
Who is Alfred Wegener?
Proposed the Continental Drift Theory which originally was rejected by most other scientists.
100
How many different types of evidence did Wegener give to support his claim?
four
100
Fossils of the same species were found on separate continents....
Palm tree leaf fossils were found in Alaska
100
This diagram is a representation of what process?
Plate Tectonics
100
This diagram represents which one of Wegener's evidence of Continental Drift?
Fossil Evidence
200
What is the Theory of Continental Drift?
The idea that Earth’s continents moved apart from a single large continent
200
What is fossil evidence ?
Fossils of the same species were found on separate continents and nowhere else
200
Glacial deposits formed 300 million years ago.....
Evidence of glaciers has been found in warm climates today
200
The Theory of Plate tectonics is.......
Earth’s crust is broken into sections called plates which are pushed by convection currents in Earth’s mantle
200
This diagram represents...
Pangaea
300
What is Pangaea?
A super continent that broke apart about 175 million years ago.
300
What is continental fit?
The continents, particularly South America and Africa, fit together like puzzle pieces at the edges of their continental shelves
300
Similar types of rocks and landforms are found on multiple continents.......
The Appalachian Mountains match well with those on the British
300
This diagram represents which one of Wegener's evidence of Continental Drift?
Landforms and Rock layers
300
Laurasia roughly formed which hemisphere?
the northern hemisphere
400
Despite a large body of compelling _______ and _______ ________, his theory was rejected by most other scientists
fossil, rock evidence
400
What is glacial evidence?
Glacial deposits formed 300 million years ago have been found in Antarctica, Africa, South America, India and Australia
400
The continents fit together like puzzle pieces....
Evidence proposed by Harry Hess to explain how the continents moved.
400
This diagram represents which one of Wegener's evidence of Continental Drift?
Glacial Evidence
400
Gondwana roughly formed which hemisphere?
the Southern Hemisphere
500
What pieces of evidence did Wegener cite to propose his theory?
Evidence includes fossils of the same species being found on separate continents, continents fitting together like puzzle pieces, glacier deposits, and various landforms on separate continents matching.
500
What is landform and rock layers evidence?
Similar types of rocks and similar ages of rocks were found on three continents and other places
500
What causes the movement of the continents?
Convection currents in the mantle cause the movement of the continents.
500
This diagram represents which one of Wegener's evidence of Continental Drift?
Continental Fit
500
Which fossil shows the most compelling evidence that the continents were once Pangaea? Why?
Glossopteris because it is found on all of the landmasses.