In Moving Plates, young readers learn Earth is made up of different layers. The solid crust and upper mantle are broken up into huge plates that are carried along by the movement of magma in the lower mantle. Plate movements cause earthquakes, volcanoes, and mountain formation.
 
Softcover, 8×8 in., 24 pages
Word Count 321,  Lexile Measure 580L
A pronunciation guide is included. Reading Level 1-3, Interest Level 2-5.