Plate Tectonics

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

• land features

• erosion

• climate

• fossils

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

• transform

• convergent

• divergent

What type of boundary is this?

• convergent

• divergent

• transform

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

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

• landform

• continent

• fossil

• landmass

What type of landform is at C?

• mid-ocean ridge

• continental crust

• deep ocean trench

• sea floor spread

What are the places of Earth's crust that carry the continents and oceans?

• sea floor spreading

• continental drift

• plates

• faults

What are breaks in Earth's crust where rocks have slipped past each other?

• sea floor spreading

• subduction

• plates

• faults

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

Most geologists think that the movement of Earth's plates is caused by

• conduction

• earthquakes

• convection currents in the mantle

• Earth's magnetic field