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Rocks When suffering came, Job was still faithful to God. Job’s faithfulness was like a rock. Read about rocks on this page. Notice how pressure and heat actually make for stronger, harder rocks. Pumice Pumice is a lightweight stone. It comes from the hot lava of volcanoes. You can find it in which of these places? a.In spas, to smooth feet b.In factories, to make stone-washed jeans c. In school cafeterias, to tenderize meat d.In pizza places, to grate cheese Photo by Jan Fischer Bachman. answer: a, b Limestone Limestone is just about everywhere. You may be standing on it right now! Powdered limestone mixed with other ingredients forms cement. Cement mixed with sand and rock makes concrete. Marble Marble is a metamorphic rock formed when limestone is put under great pressure and heat. Marble is polished to make sculptures and building materials that are beautiful and strong. Slate Photo by Jonathan Zander. Schist id hat d Q: W ck say ro r? one othe e h t to Gneiss A: Gneiss to meet you! Schist, slate, and gneiss (pronounced like “nice”) are metamorphic rocks. Like all metamorphic rocks, they are formed with great pressure and heat. Photo by Siim Sepp. Shine: Living in God’s Light. Copyright © 2016 by Brethren Press, Elgin, IL 60120; MennoMedia, Harrisonburg, VA 22802, Kitchener, ON N2G 3R1. All rights reserved. Printed in the United States of America. Permission is granted to photocopy this page for one-time use with the Shine curriculum.