Exam 13: Glaciers and Glaciation

Under what conditions do large crevasses develop in glaciers? What forces act to produce them,and where in the glacier are they found? What happens if a glacier descends over a steep precipice?

How can you tell a river valley from a glacial valley if there is no glacier within the valley?

What are dropstones,and what do they indicate?

Describe differences in flow rates within a valley glacier.

An arête is a narrow,serrated ridge between two glacial valleys or adjacent cirques.

A glacial landform that forms at the head of glacial valleys or troughs is called a(n):

Under what conditions can glaciers exist in the equatorial latitudes?

How does the Milankovitch theory explain intermediate-term climatic events like the Pleistocene glaciation? According to Milankovitch,variations in what three parameters of Earth's orbit were responsible for the onset of Pleistocene glaciation?

What are kettles,and how do they form?

How can the boundary between the zones of accumulation and wastage on a glacier be located during the spring and summer?