... CHAPTER Earth s Materials How can we describe rocks and soil? 126 Lesson Rocks Page 130 Lesson Rocks Change Page 140 Lesson Soil Page 150 ES Earth is made of materials ... takes thousands of years for mountain rocks to become sand 165 CHAPTER Review luster , page 136 minerals , page 134 properties , page 136 soil , page 152 weathering , page 142 Use each word once ... change rocks is called ES 3. c All rocks are made of ES 3. a Tiny rocks and pieces of dead plants and animals are in ES 3. c The way a mineral looks under light is its ES 3. a This mineral is very...