Transcript

How does the Earth How does the Earth work?work?

Early 1900’s: Early 1900’s: Continental DriftContinental Drift Theory that continents and plates Theory that continents and plates

move on the surface of the Earthmove on the surface of the Earth No mechanism proposedNo mechanism proposed

Evidence for continental Evidence for continental driftdrift

Matching coastlines from early mapsMatching coastlines from early maps

Alfred WegenerAlfred Wegener

1915 maps by Wegener 1915 maps by Wegener of Pangaeaof Pangaea

Evidence for continental Evidence for continental driftdrift

Matching Coastlines

Evidence for continental Evidence for continental driftdrift

Evidence for continental Evidence for continental driftdrift

Matching mountainranges

Evidence for continental Evidence for continental driftdrift

Matching rock types

Evidence for continental Evidence for continental driftdrift

Matching glacierdeposits 300million yearsago

Evidence for continental Evidence for continental driftdrift

Glossopteris fernGlossopteris fern Found on all Found on all

southern southern continentscontinents

Evidence for continental Evidence for continental driftdrift

Matchingfossils

Evidence for continental Evidence for continental driftdrift

Matching coastlinesMatching coastlines Matching mountainsMatching mountains Matching rock typesMatching rock types Matching rock agesMatching rock ages Matching glacier depositsMatching glacier deposits Matching fossilsMatching fossils


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