Question 1
When a glacier is retreating, the upstream ice is ________.
◦ moving forward toward the downstream terminus of the glacier
◦ moving underground
◦ moving backward towards the head of the glacier
◦ not moving at all. Glacial ice does not move
Question 2
Melting and ________ are two forms of ablation.
◦ plastic flow
◦ deflation
◦ calving
◦ striations