Glaciers. 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.

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Presentation transcript:

Glaciers

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

Interactive Song

 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 Vocabulary!

Glaciers Huge masses of ice

Glaciologist Doing work!

Calving

snout

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!  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. The tallest known iceberg in the North Atlantic was 550 feet (168 m) above sea level.

       =isch&tbnid=6wzyRW4w6QeffM:&imgrefurl= qdKY1vgrEEaZM&imgurl= to_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= &page=1&tbnh=117&tbnw=176&s tart=0&ndsp=31&ved=1t:429,r:1,s:0,i:152 References