How are they made? • A glacier begins when snow doesn’t completely melt away during the summer. Each with new snow falls on top of the old snow. Thick layers of snow are gradually compressed into glacial ice. • Glaciers grow and shrink in response to climate
Vocabulary! Glaciology - the study of glaciers Glaciologist - a scientist who studies glaciers Glaciers- Huge masses of ice Ice Calving- the sudden release and breading away of a mass of ice from the glacier Iceberg- A huge chunk of ice floating in the ocean they come in small, medium, and large. Snout - the end of a glacier Firn- older snow
Glaciers Huge masses of ice
Glaciologist Doing work!
Firn The layers of old snow
Small bergs • a little smaller than a car • known as “growlers,”
larger bergs • about the size of a house • Called ”bergy bits.”
Facts! • The tallest known iceberg in the North Atlantic was 550 feet (168 m) above sea level. • 10% of land on Earth is covered with glacial ice • Glaciers store about 75% of the world's freshwater. • During the last ice age, glaciers covered 32% of the total land area.
References http://beyondpenguins.ehe.osu.edu/issue/icebergs-and-glaciers/all-about-icebergs http://kids.britannica.com/elementary/article-353281/Iceberg http://en.wikipedia.org/wiki/Ice_calving http://www.neok12.com/Glaciers.htm http://kids.discovery.com/tell-me/curiosity-corner/earth/in-the-ocean/what-are-glaciers http://www.onegeology.org/extra/kids/earthprocesses/glaciers.html http://www.google.com/imgres?q=glaciers&um=1&hl=en&tbo=d&biw=1280&bih=923&tbm=isch&tbnid=6wzyRW4w6QeffM:&imgrefurl=http://en.wikipedia.org/wiki/Glacier&docid=pqdKY1vgrEEaZM&imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Perito_Moreno_Glacier_Patagonia_Argentina_Luca_Galuzzi_2005.JPG/220px-Perito_Moreno_Glacier_Patagonia_Argentina_Luca_Galuzzi_2005.JPG&w=220&h=147&ei=9PS8UNSnK4GG2wW094HoBQ&zoom=1&iact=hc&vpx=205&vpy=209&dur=364&hovh=117&hovw=176&tx=125&ty=77&sig=103507630895865753834&page=1&tbnh=117&tbnw=176&start=0&ndsp=31&ved=1t:429,r:1,s:0,i:152