Continental Drift

Continental Drift

Supporting Evidence

Alfred Wegener (Video)

Theory of Continental Drift

Multiple Choice

Alfred Wegener noticed that the same land animals could be found on land separated by oceans.

• True

• False

Multiple Choice

What was Pangea?

• Land Animal

• One Giant Land Mass on Earth

• A New Island

• Wegener's Pet

Wegener's Evidence

Continents Fit Like Puzzle Pieces

Multiple Choice

Wegener noticed that the shapes of the continents seemed to fit together like puzzle pieces.

• True

• False

Wegener's Evidence

Similar Rock Layers Found on Different Continents

Formation of Rock Layers

• Sediment Deposits (soil, ocean & river sediment, lava, glaciers, etc)

• Dead Matter Gets Sandwiched in Deposits

• Older Layers on Bottom

How can we see layers underground?

• Weathered Rock

• Eroded Land

• Earthquakes

Multiple Choice

Wegener noticed similar rock layers on different continents separated by oceans.

• True

• False

Multiple Select

What kinds of materials can be deposited to make up layers of rock?

• soil

• lava

• ocean sediment

• river sediment

• glaciers

Multiple Choice

There is no way to see the layers of rock under the surface.

• True

• False

Wegener's Evidence

Same Fossils Found on Different Continents

Fossils and Rock Layers

Location of fossils helps to date rock layers

Multiple Choice

When Wegener found that the fossils of the same types of plants and animals were found on continents separated by oceans in made him thing that

• plants & animals could cross large oceans.

• they were put their by wizards.

• the land was all joined together in the past.

Multiple Choice

Only the fossils of animals that could swim were found on continents separated by large oceans.

• True

• False

Wegener's Missing Piece (Video)

Tectonic Plates

Mapping Surface Features

• Sonar During WWII

• Images of the Shape of the Ocean Floor

• Found Underwater Mountains - Midocean Ridges

Mid Ocean Ridges

Where the Seafloor Spreads

Plate Tectonics

• Plates are Large Pieces of Rock

• Move Because of Pressure from Under Earth's Surface

Multiple Choice

What new technology allowed scientists to see what the seafloor looked like during World War II?

• satellites

• tractors

• x-rays

• sonar

Multiple Choice

What do we call the moving of large pieces of rock across Earth's surface?

• plate traffic

• plate erosion

• plate tectonics

• plate bumpers