The purpose of this activity is to make a model of a glacier and see how it shapes the land!
Glaciers are always on the move. Real glaciers flow as the weight of new snow and ice on the upslope side pushes the whole glacier downward. It moves down because of the pull of gravity. Your mini-glacier is moving because you push it; it is not flowing like the ice in a real glacier.
As your glacier moves, it pushes the layer of flour just as real glaciers push dirt and rocks as they move, changing the landscape. You may have found that your glacier plowed flour along in front of it. When you remove your glacier from the cookie sheet, there is a hill of flour that was pushed by the glacier. When real glaciers leave a hill like this, it is called an end moraine or terminal moraine. Also, your mini-glacier may have left little ridges of flour on the sides of its path as it moved down the slope. When real glaciers leave piles of sand and gravel at the sides of their path, each is called a lateral moraine. Did your glacier make streaks in the flour that it moved over? These are like striations, scratches that real glaciers make in the bedrock that they scrape.
(Modified from PBS Teacher’s Resources Glacier Maker activity