| Term | Definition |
| Glaciers | a thick mass of moving ice and snow on land |
| Snowline | elevation above which ice and snow remain throughout the year |
| Snowfield | almost motionless mass of permanent snow and ice |
| Firn | grainy ice in a glacier that has been partially melted and refrozen |
| Valley glacier | long, narrow, wedge-shaped mass of ice that develops and usually moves through a mountain valley |
| Continental ice sheet | large masses of ice that cover large land areas. Greenland and Antarctica are covered. |
| Rivers of ice | another name for glaciers |
| Basal Slip | movement of a glacier caused by the melting of ice in contact with the ground |
| Internal plastic flow | slow movement of a glacier in which ice crystals slip over each other |
| Crevasses | large crack that forms on the surface of a glacier |
| Icebergs | a large mass of ice in the middle of an ocean |
| ArĂȘtes | sharp, jagged ridge formed between cirques |
| Horn | sharp, pyramid-like peak formed where several arĂȘtes join |
| Cirque | bowl-shaped depression produced by a valley glacier |
| Roches Moutonnees | mountains or rocks that have been carved out by glaciers running over them. |
| Hanging valley | small abandoned glacial valley suspended on a mountain above the main glacial valley |
| Erratic | large boulder transported and deposited by a glacier |
| Glacial Drift | sediments deposited by a glacier |
| Till | unsorted rock material deposited by a glacier |
| Stratified drift | glacial deposit that has been sorted and layered by the actions of streams or meltwater |
| Meltwater | melted ice flowing from a glacier |
| Moraines | landforms made from glacial till |
| Lateral moraines | unsorted material deposited along the sides of a valley glacier |
| Medial moraine | ridge of unsorted glacial material along the center of a valley glacier |
| Ground moraine | unsorted material left beneath a glacier when the ice melts |
| Drumlins | long, low, tear-shaped mound of till |
| Terminal moraine | till deposited at the leading edge of a melting glacier |
| Outwash plain | deposit of stratified drift in front of a glacier |
| Kettles | depression in a glacier outwash plain |
| Eskers | long, winding ridge of gravel and course sand deposited by a glacier |