Chapter 3 Lesson 1

The theory of _____ states that Earth's surface is broken into large, rigid pieces that move with respect to each other.

• plate tectonics

• convection currents

• continental drift

• evolution

The pieces of Earth's surface, called _______ , move over Earth's surface very slowly.

• tectonic plates

• inner core

• outer core

• continental crust

The crust and the uppermost part of the mantle make up the _______.

• lithosphere

• asthenosphere

• inner core

• outer core

The partially melted portion of the mantle below the lithosphere is the ______.

• asthenosphere

• inner core

• crust

• outer core

The _______ can bend more easily than the lithosphere because it is hotter than the lithosphere.

• asthenosphere

• atmosphere

• inner core

• outer core

Two kinds of crusts are....

• continental and oceanic

• oceanic and crust

• mantle and core

• convection and subduction

A _______ boundary is a boundary where two plates move away from each other.

• convergent

• transform

• divergent

• convection

A _______ boundary is a boundary where two plates move toward each other.

• divergent

• transform

• convergent

• convection

The process that occurs when one tectonic plate moves under another tectonic plate is called ______ .

• divergent

• subduction

• transform

• ridge

A _______ boundary is a boundary where two plates slide past each other.

• transform

• divergent

• convergent

• convection