Presentation on theme: "Midterm Schedule Thursday January 28 (Periods 1 and 5)"— Presentation transcript:
1Midterm Schedule Thursday January 28 (Periods 1 and 5) Friday January 29 (Periods 2 and 6)Monday February 1 (Periods 3 and 7)Tuesday February 2 (Periods 4 and 8)1st Exam: 7:45AM – 9:50AM2nd Exam: 10:00AM-12:05PM
2Continental DriftWhat evidence do scientists have to support the fact that the Earth’s crust is continuously moving?
31500s – Abraham OrteliusSaw that the coastlines of Africa and the Americas looked similarConcluded they must have once fit togetherBroke apart due to floods, earthquakes and volcanoes
41800s – Eduard SuessStated that the southern continents were once a single landmass called GondwanalandNorthern continents called Laurasia
51900s – Alfred Wegener Continental Drift Hypothesis that Earth’s continents were joined as a single landmass that broke apart about 200 mya (million years ago) and slowly moved to their present locations
10Climatic EvidenceCoal deposits in Antarctica indicate that the climate was much warmer in the pastMust have been located closer to the equator before it drifted
11Flaws in Continental Drift Theory Not able to explain what force was large enough to move such large pieces of earth over great distancesNot able to explain how the ocean basins were not shattered, move through solids
12Review Q’s What does Pangaea mean in Greek? What was Ortelius’ contribution to Con. Drift?Who is credited with the theory of Con. Drift?List and describe the three main evidences for Con Drift.What is one major flaw in the theory of Con. Drift?