| A | B |
|---|
| GLACIER | slow moving mass of ice 1000s of feet thick |
| VALLEY GLACIER VS. CONTINENTAL GLACIER | valley glaciers fill a mountain (alpine) valley; continental glaciers are much larger and round off mountain tops that they cover |
| ICE SHEET | an ice pack covering nearly an entire landmass |
| ABLATION | loss of ice at the end of a glacier |
| AUSTRALIA | the only continent without glaciers |
| ARETE | sharp, narrow ridges between cirques |
| TERMINAL MORAINE | unsorted glacial deposits showing the farthest advance; Long Island is one |
| DRIFT | any deposits left behind when a glacier melts |
| ESKER | winding snakelike deposit of a subglacial stream |
| U-SHAPED VALLEY | alpine glacier erosion |
| KETTLE | depression left by a melted subterranean ice block |
| ERRATIC | boulder deposited by a glacier far from its origin |
| SNOW LINE | lowest elevation at which snow remains all year; when moving away from the equator the snow line becomes lower |
| FIRN | snow that gets compressed and recrystalizes as granular ice |
| FASTEST MOVING SIDE OF A GLACIER | center of the surface |
| GREAT LAKES | formed by ice age erosion and melting |
| CREVASSE | horizontal cracks along the surface of a glacier |
| CALVING | icebergs break off the teminus of a glacier |
| ERRATIC | boulders plucked and moved by a glacier |
| BASAL SLIP | sliding along the base of the glacier |
| PLASTIC FLOW | movement within the glacier due to pressure |
