| A | B |
|---|
| glaciers | mass of snow and ice that moves, accumulates all year long |
| erratic | rock moved from somewhere else by a glacier |
| erosion | wearing away |
| ice age | a period in the earth's history when the global temperature was much colder than now |
| 10,000 years ago | when the last ice age was over |
| iceberg | floating ice, 90 % is under water, 10% above |
| kettle | a lake formed when a block of ice from a glacier melted |
| retreat | move back, in this case, when the earth's temperature warmed up and the glaciers melted "moving" north |
| advanced | move forward, in this case, when the glaciers accumulated further south as the temperature got colder |
| abrasion | scrapes, in this case, made by rock carried by glaciers |
| geology | study of the earth |
| gravity | the pull between two objects of mass; a force of erosion |
| mechanical weathering | physically breaking down; example-the force of gravity |
| chemical weathering | breaking down and making a new substance example: rust |
| esker | a mound of till carried by a river at the bottom of a glacier |
| meander | the curved shaped of the river |
