Glaciers Crossword Puzzle

QUESTIONS LIST:

• million : the last ice age began about two- _ years ago and the ice sheet began to retreat about eighteen-thousand years ago.
• erosion : a glacier is a huge mass of moving ice and is a powerful agent of _ .
• deposits : after glaciers have melted they leave behind glacial _ of sediment and debris.
• four : scientists have found evidence of at least _ major ice ages.
• continental : _ glaciers are massive ice sheets that cover large land masses.
• icecaps : large blocks of ice that cover mountain tops.
• snowline : a _ is a certain elevation where ice and snow remain all year.
• valley : a _ glacier is a long, narrow, wedge shaped mass of ice that moves through mountains.
• icebergs : large blocks of ice that fall off ice shelves into the ocean.
• horns : glacial _ are three-sided mountain peaks carved by ice.