Answer to Question 1
Landscapes eroded by valley glaciers are distinctive for the presence of broad-floored, steep-sided, U-shaped valleys that are flanked by sharp-edged ridges and peaks. The long profile of the valley floor is commonly irregular with waterfalls and lakes, tributary valleys commonly join the larger rivers as high waterfalls plunging from hanging valleys. Glacial valleys commonly feature amphitheater-shaped headwater areas, called cirques.
Answer to Question 2
Moraines are ridges of poorly sorted material deposited by a glacier. End moraines form at the leading snout of the glacier, with many parallel moraines marking different positions of the glacier over time. Lateral moraines are moving ridges of stony debris that accumulate on the margin of a valley glacier. Where two valley glaciers join to form a wider glacier, their lateral moraines combine within the larger glacier to form a medial moraine. Ground moraine is the material deposited as a sheet beneath the glacier.
Glacier Bay, Alaska.
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