Plate Tectonics Quiz

The three main layers of the earth are the crust, mantle, and core.

Continental plates can be up to 150 km thick.

Oceanic plates usually average about 5-10 km thick.

<p>Plate boundaries are the edges of the plates where they interact with each other.</p> Signup and view all the answers

<p>The main theory of plate movement states that heat from the core causes convection cells in the mantle that move the plates as they ride on the mantle.</p> Signup and view all the answers

<p>The main source of heat that drives the process of plate movement is thought to be the radioactive decay of uranium and other elements that give up their energy as heat as they break down.</p> Signup and view all the answers

<p>Plate tectonics is the theory that the surface of the earth is broken into larger pieces of crust called plates that ride along on a softer layer of the earth, known as the asthenosphere, which is the upper part of the mantle.</p> Signup and view all the answers

<p>The three main layers of the earth are the lithosphere, asthenosphere, and mantle.</p> Signup and view all the answers

<p>The lithosphere is the rigid outermost layer of the earth, consisting of the crust and the uppermost part of the mantle.</p> Signup and view all the answers

<p>The asthenosphere is the semi-fluid and partially molten layer of the earth's mantle beneath the lithosphere.</p> Signup and view all the answers

<p>The mantle is the layer of the earth between the crust and the core, consisting of hot, semi-fluid rock.</p> Signup and view all the answers

<p>The core is the innermost layer of the earth, consisting of a solid inner core and a liquid outer core.</p> Signup and view all the answers

<p>Plate tectonics is the current accepted theory that describes how the face of the earth can change over time.</p> Signup and view all the answers

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