Earth’s Layers are a terrestrial planet thought to be made of 3 layers: crust, mantle, core. Scientists can't see the interior of Earth, but studying earthquakes and volcanoes indicates what it may be like. 24 pp. Reading Level 1-3/Interest Level 2-5
 
Softcover, 8×8 in., 24 pages
Word Count 328,  Lexile Measure 580L
A pronunciation guide is included. Reading Level 1-3, Interest Level 2-5.