Continental Drift Flashcards
What is the name of the single land mass
Pangaea -( all lands )
What was Alfred wegner’s hypothesis
All continents has been joined together in a single land mass and have drifted apart
What did Pangaea break up to be
Laurasia and bondwana land
Laurisia - Europe and Asia
Bondwana - Africa
What is the most evidence of continental drift
Apparent fit of the continent
Wegner priced together maps that showed mountain ranges that matched up in SA and South America
Eg elbow of South America fits into the armpit of Africa
Other evidence of continental drift
European coal mines matched up with coal mines in North America
And
Coal which is formed from fossilized plant remains is found on a cool climate like south whales
Explain the climatic evidence of continental drift
Spitsbergen an Arctic island which is ice covered Was found with fossils of tropic plants
When these plants lived long ago the island must have had warm climate
It was also found that the same time it was warmer in Spitsberg it was colder in SA
What are glaciers
Thick layers of ice
Explain how palaces magnetic dating is evidence if continental drift
It was found that certain rocks in different continents had the same magnetic pattern and same age , proving that they were formed in the same place
What is palaes magnetic dating
Process of determine the ages of rocks by studying their carbon content and magnetic characteristics
What is the Summary of continental drift evidence
Apparent fit of continents Fossils Rock Palaes magnetic dating Climate