Continental Drift, Seafloor Spreading, Plate Tectonics quiz #1

The hypothesis that continents have slowly moved to their current locations is called

• Magnetic Reversal

• Continental drift

• Continental Slope

• Convection

The presence of the same fossils on several continents supports the hypothesis of

• Fossils

• Rock layers

• Neither A or B

• Both A and B

The map shows where glaciers existed 250 million years ago. Which explanation is supported by the data in the map?

• Glaciers formed in the locations shown on the map because of a change in climate that caused the southern hemisphere to experience an ice age.

• Glaciers at one time covered most of the continents in the world, but the glaciers melted and the areas on the map are places where glaciers still remain.

• There is evidence of glaciers in the areas identified on the map because the current climate in those areas still supports glacier formation.

• There is evidence of glaciers in the areas identified on the map because the continents were once located near a polar region, but then over time the continents moved apart.

The diagram shows where fossils of two different species, Lystrosaurus and Glossopteris, have been found on more than one continent. How is this kind of evidence used by scientists?

• To determine how the rocks formed on different continents

• To predict how the continents might look in the future with continued plate movement.

• To explain the process of how the continents are in different locations today than in the past.

• To support the theory that these continents were once joined together but then moved apart over time.

The youngest rocks on the ocean floor are located

• Near continents

• At the middle of mid-ocean ridges

• Far from mid-ocean ridges

• Near Asia

A lack of explanation for continental drift prevented many scientists from accepting that a supercontinent called once existed.

• Glomar

• Glossopteris

• Pangea

• Wegener

Mid-ocean ridges are formed at a

• Convergent

• Divergent

• Transform

• Strike - Slip

The theory of________ explains how new crust is created at mid-ocean ridges

• Sea-floor spreading

• Convergent boundaries

• Continental drift

At an oceanic-oceanic convergent plate boundary,

• New crust is created

• Old crust is recycled by subduction

• Old crust is deformed or fractured

• Plates slide past one another.

The driving force of tectonic plates are related to convection currents in the Earth's

• Crust

• Mantle

• Inner core

• Outer core