TECTONICS RECAP

What is the correct order (starting from the surface) of Earth’s layers?

• crust, outer core, inner core, mantle

• mantle, outer core, inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, crust, mantle

A German scientist Alfred Wegener was the first to hypothesize that ...........

• Continents were never joined together

• The sea floor is spreading

• The continents are moving

• The Earth's magnetic pole flips

The movement of the tectonic plates is caused by

• the rotation of the Earth.

• convection currents in the Asthenosphere and mantle

• the gravity of the iron-nickel core.

• the Moho discontinuity.

There are three types of plate boundaries. Which choice is NOT a type of plate boundary?

• Destructive (convergent)

• thrust (Propel)

• Constructive (divergent)

• Conservative (transform)

What evidence was NOT used by Wegener as proof of continental drift?

• land features

• erosion

• climate

• fossils

What is a plate boundary where both plates move away from each other?

• Constructive (divergent)

• plate

• Destructive (convergent)

• Conservative (transform)

Any trace of an ancient organism that has been preserved in rock is called a

• landform

• continent

• fossil

• landmass

According to Wegener's theory of continental drift,

• Earth's surface is made up of seven major landmasses

• the continents do not drift

• Earth is slowly cooling and shrinking

• the continents were once joined together in a single landmass and have slowly moved.

What is the process that continually adds new crust to the ocean floor along both sides of the mid-ocean ridge?

• subduction

• continental drift

• convergent

• sea floor spreading

What is a plate boundary where two plates move toward each other?

• Conservative (transform)

• Destructive (convergent)

• Constructive (divergent)