Glaciers That Move Via Basal Sliding Can Often Undergo Surges

question 54

Multiple Choice

Glaciers that move via basal sliding can often undergo surges in which they move at a much faster rate than normal because they ________.

• A)are not slowed down by plastic deformation
• B)float on a cushion of air like avalanches
• C)have minimal frictional contact with bedrock
• D)have a larger volume than other glaciers

---

Definitions:

Obsessive-Compulsive Disorder

A mental disorder where people feel the need to check things repeatedly, perform certain routines repetitively, or have certain thoughts persistently.

Intrusive

Unwanted or disturbing thoughts, impulses, or images that enter the mind, causing significant anxiety or discomfort, typically associated with conditions like OCD.

Repetitive Behaviors

Actions or tasks that are performed repeatedly in a manner that may not appear to have an obvious goal or function.

Phobias

Intense, irrational fears of specific objects, activities, or situations that lead to avoidance behavior.