ice sculptures - Digital Chalkboard

Transcription

ice sculptures - Digital Chalkboard
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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
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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.
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The Malaspina Glacier in Alaska. Photo courtesy of Image Science
and Analysis Laboratory, NASA-Johnson Space Center.
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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.
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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
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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.
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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.
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