Glacier Formation Overview

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Questions and Answers

What can happen in places where it is cold most of the year due to the timing of ice formation?

  • One season's ice may not freeze entirely before the next season's ice begins to form. (correct)
  • The ice remains frozen throughout the year without any changes.
  • Ice formation never occurs.
  • Ice formation only happens during the warm seasons.

Why is the common glacier definition somewhat inaccurate?

  • Glaciers are sheer-faced walls of pristine ice.
  • Glaciers are not sheer-faced walls of pristine ice. (correct)
  • Glaciers are not made of ice.
  • Glaciers never move.

How are glaciers different from mountains of stone?

  • Glaciers are smaller in size compared to mountains.
  • Glaciers do not move, unlike mountains.
  • Glaciers can move, unlike mountains. (correct)
  • Glaciers are always solid structures, unlike mountains.

What environmental impact can glaciers have when they melt or move?

<p>They push and carry along anything in their paths. (B)</p> Signup and view all the answers

What is one of the most prominent signs of climate change on Earth related to glaciers?

<p>Large-scale glacial retreat (C)</p> Signup and view all the answers

Which of the following factors influence the speed of a glacier's movement?

<p>Glacier type, amount of snowfall, meltwater, and temperature (B)</p> Signup and view all the answers

What impact can the movement of a glacier have on the landscape?

<p>It can cause depressions in the land and leave behind a jagged terrain (D)</p> Signup and view all the answers

How do glaciers pick up rocks and boulders?

<p>Through abrasion, where the bottom of the glacier pulls materials along, and plucking, where entire pieces of earth break off and become embedded in the glacier (A)</p> Signup and view all the answers

What can cause the formation of glacial lakes?

<p>The sheer weight of a glacier can create depressions in the ground, which can then be filled with meltwater (C)</p> Signup and view all the answers

What is the current trend in glacier movement globally?

<p>Glacial retreat has increased globally, with many smaller glaciers melting away entirely (B)</p> Signup and view all the answers

What is the origin of the English word 'glacier'?

<p>It originates from the Savoy dialect word 'glacière' meaning 'moving mass of ice'. (A)</p> Signup and view all the answers

In the anatomy of a glacier, what is the accumulation zone?

<p>The top part of the glacier where snowfall accumulates and adds to the glacier's mass. (A)</p> Signup and view all the answers

What is the primary cause of crevasse formation in glaciers?

<p>The uneven surface underneath the glacier causes the upper parts to crack. (C)</p> Signup and view all the answers

Which process allows glaciers to move over obstacles or rough terrain?

<p>Internal plastic deformation (A)</p> Signup and view all the answers

What is the primary driving force behind glacier movement?

<p>Gravity (D)</p> Signup and view all the answers

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