81. What is the name for the process by which glaciers lose ice due to melting or evaporation?
a) Ablation
b) Accumulation
c) Sublimation
d) Basal sliding
82. Which of the following is a type of glacial deposit that forms when a glacier deposits sediment along its sides and front as it advances?
a) Esker
b) Kame
c) Drumlin
d) Moraine
83. What is the name for the process by which glaciers move downhill under the force of gravity?
a) Flow
b) Erosion
c) Deposition
d) Weathering
84. Which of the following is a type of glacial feature that forms when a hanging glacier melts, leaving behind a U-shaped valley?
a) Tarn
b) Cirque
c) Horn
d) Arete
85. What is the name for the process by which glaciers pick up and transport sediment?
a) Flow
b) Erosion
c) Deposition
d) Weathering
