Plate Tectonics

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

• landform

• continent

• fossil

• landmass

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

In sea floor spreading, molten material rises from the mantle and erupts

• along the edge of the continents

• along the mid-ocean ridges

• in deep ocean trenches

• at the North and South pole

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.

Identify the landform labeled A

• mid-ocean ridge

• deep ocean trench

• sea floor spread

What is Wegener's idea that continents are slowly moving over Earth's surface called?

• divergence

• faults

• plates

• continental drift

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

• land features

• erosion

• climate

• fossils

The geological theory that states that pieces of Earth's plates are in constant, slow motion, driven by convection currents is the theory of

• subduction

• plate tectonics

• deep ocean trenches

• sea floor spreading

What type of boundary is this?

• convergent

• divergent

• transform

What is a plate boundary where two plates slip past each other moving in opposite directions?

• transform

• convergent

• divergent