1) The main idea of this passage is that glaciers, as they move and melt, leave behind distinct geological features such as moraines, erratics, and cirques, which can transform landscapes into scenic and beautiful areas worth preserving.
2) The author views glaciers positively, seeing them as powerful natural sculptors that create stunning landscapes. This is evident from phrases like “amazingly scenic and beautiful,” “natural wonders,” and “how glaciers can transform a landscape,” as well as the admiration expressed for places like Yosemite Valley.
3) A possible synonym for erratic is boulder.
4) Based on the context, picturesque means visually attractive or charming, especially in a way that resembles a painting — referring to the beauty of the glacial leftovers like lakes, valleys, and rock formations.
5) A moraine is formed when a slow-moving glacier scrapes the ground as it moves, pushing and dragging rocks and debris along with it; when the ice melts, these materials are left behind as a ridge or indentation lined with small rocks and debris.
Parent Tip: Review the logic above to help your child master the concept of science comprehension worksheet.
