ice sculptures - Digital Chalkboard
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ice sculptures - Digital Chalkboard
7 8 Glaciers are also found in the Artic and in Antartica. Photo courtesy of Alaskan Dude, Flickr. Glaciers are also found in the Arctic and in Antarctica. They press and grind the land below as they move. ICE SCULPTURES ICE SCULPTURES http://beyondpenguins.nsdl.org ABOUT THE AUTHOR Stephen Whitt Jessica Fries-Gaither Director of Experience Programs Teaching and Learning COSI Elementary Resource Specialist, The Ohio State University He has written over 40 articles for children’s science magazines, and his first book, called The Turtle and the Universe was published by Prometheus Books in 2008. Issue 15: Icebergs and Glaciers (August 2009) Copyright August 2009 - The Ohio State University Jessica taught elementary and middle school in Memphis, TN and Anchorage, AK. Supported by the National Science Foundation Licensed Under a Creative Commons license. http://creativecommons.org/licenses/by-sa/3.0/ Find this story and others at: http://beyondpenguins.nsdl.org/information.php?topic=stories Flesch - Kincaid RL = 3.8 ICE SCULPTURES ORIGINAL TEXT WRITTEN BY STEPHEN WHITT ADAPTED BY JESSICA FRIES-GAITHER AUGUST 2009 10 5 Glaciers shaped the rocks in the Kalahari Desert. Photo courtesy of Martin Heigan, Flickr. The glacier becomes so heavy that it slowly moves down the mountains. The glacier scrapes and shapes the mountains’ sides as it moves. ICE SCULPTURES ICE SCULPTURES ICE SCULPTURES ICE SCULPTURES Glaciers also covered most of the northern United States. Here they formed the Great Lakes and left grooved rocks behind. Glaciers left grooves in rocks. Photo courtesy of Valeehill, Flickr. 13 The Malaspina Glacier in Alaska. Photo courtesy of Image Science and Analysis Laboratory, NASA-Johnson Space Center. 2 9 Glaciers have shaped the world in surprising ways. Millions of years ago, glaciers covered the desert of South Africa. The glaciers slowly moved, scraping across the desert’s rocks. Today, we see flat, polished rocks and know that glaciers were once there. 6 Glaciers, as they move, scrape and shape the sides of mountains. Photo courtesy Dru!, Flickr. ICE SCULPTURES ICE SCULPTURES ICE SCULPTURES ICE SCULPTURES You probably know that wind and water can shape Earth’s land. But did you know that glaciers can too? Glaciers are made of ice. Ice is a solid. But glaciers are so large and heavy that they can flow like a river. Even though many of these glaciers are long gone, we can see their sculptures all around us. GLOSSARY fjord - a deep valley filled with water glacier - a large mass of ice that slowly moves 1 14 3 12 The snow on mountain tops does not melt. It collects and compresses until it forms a glacier. Photo courtesy of Jesse Varner, Flickr. The Geiranger fjord in Norway. Photo courtesy of Geir Halvorsen, Flickr. ICE SCULPTURES ICE SCULPTURES ICE SCULPTURES ICE SCULPTURES Glaciers also covered the country of Norway. As the glaciers slowly moved, they scraped the sides of the mountains there. Today, we see deep valleys filled with water. We call these valleys fjords and know that glaciers made them too. 11 Glaciers are found on high mountains. It is cold there, so snow doesn’t melt. Instead, the snow piles up and gets squished together, forming ice. Over many years, the ice builds up and forms a glacier. 4
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ICE SCULPTURES
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