Continental Drift and Plate Tectonics

Which of the following is NOT a piece of evidence presented by Wegener to support Continental Drift

• Plant and animal fossils on different continents

• Matching landforms on different continents

• Magnetic striping on the ocean floor

• Puzzle fit of modern continents

What is this a picture of?

• plate tectonics

• continental drift

• pangea

• glacier scaring

Originally the Continental drift theory was not well received by other scientists. Why?

• There was a competing theory at the time that was more believable.

• There was no data showing the continents ever moved.

• Wegener could not explain the mechanism that made continents move

• The scientist presenting the data was unreliable.

Which of the following scientists discovered sea floor spreading?

• Wegener

• Hess

• Einstein

• Churchill

What is an underwater mountain range where new ocean floor is made?

• subduction

• mid-ocean ridge

• deep-sea trench

Plate Tectonics and Continental Drift are the same thing

• True

• False

What two components make up the Plate Tectonic Theory?

• Continental Drift and Magnetic Striping

• Continental Drift and Seafloor Spreading

• Seafloor Spreading and Plate Tectonics

What evidence helped Harry Hess prove that sea-floor spreading was occuring

• Ocean crust gets older as you move away from mid ocean ridges

• Underwater mountains

• Fossils of plants and animals

• Puzzle fit of the continents

What evidence helps scientists show how sea floor spreading occurs?

• Age of oceanic crust

• Magnetic Stripes

• New Crust created at Mid ocean Ridges

• All of these

Which answer correctly matches the timeline of discoveries.

• Hess, Sea Floor Spreading, Early 1900's

• Wegener, Continental Drift, Early 1950's

• Continental Drift 1915, Sea Floor Spreading 1950's, Plate Tectonic Theory 1960's