4. Surface Processes

Glacial Processes — Quiz

Test your understanding of glacial processes with 5 practice questions.

Practice Questions

Question 1

Which depositional landform is a smooth, elongated hill of glacial till shaped parallel to ice flow?

Question 2

Which moraine forms when lateral moraine debris from two merging valley glaciers is deposited in the centre of the combined glacier?

Question 3

Using $\rho=900\,\mathrm{kg/m^3}$, $g=9.8\,\mathrm{m/s^2}}$, ice thickness $h=100\,\mathrm{m}$, and surface slope $\alpha=5^\circ$, what is the basal shear stress $\tau$ (in Pa) given $\tau=\rho g h \sin\alpha$?

Question 4

A temperate glacier has a surface velocity of $120\,\mathrm{m/yr}$, of which 70\\% is due to internal deformation. What is the basal sliding velocity component?

Question 5

Which term describes the fine, silt-sized rock particles produced by glacial abrasion that give meltwater a milky appearance?