Question at position 40 What is glacial calving? A glacier breaking up or splintering so as to produce a detached piece.A glacier thinning by melting down.A glacier expanding, producing more ice coverage.

Question

BlackTom AI · Accepted Answer

Question restatement: What is glacial calving?

Option 1: A glacier breaking up or splintering so as to produce a detached piece.
This describes the process of calving, where chunks of ice break off at the terminus of a glacier, forming icebergs in a body of water or leaving a cliffed terminus. It aligns with the standard definition of calving in glaciology.

Option 2: A glacier thinning by melting down.
This describes ablation or melt-related thinning of the glacier surface, not calving. While thinning can occur alongside calving, it is a different process that reduces ice volume through melting rather than the mechanical breakup of ice at the terminus.

Option 3: A glacier expanding, producing more ice coverage.
This describes forward growth or advance of a glacier, which increases ice area or thickness but is not calving. Calving is about fragments breaking off, not about expansion.

Reasoning about potential misconceptions:
- Some learners might confuse calving with simple melting; remember calving is a mechanical process of piece detachment, typically at the terminus, often producing icebergs.
- Another common confusion is between calving and glacier advance. Calving does not imply expansion; it may occur in a retreating glacier where pieces break off as the terminus recedes.
- The term 'detached piece' in the description is a key cue pointing to calving, distinguishing it from thinning due to melt or growth due to accumulation.

Summary of correctness:
- The statement that matches the standard definition of glacial calving is the one describing the glacier breaking up or splintering to produce a detached piece, while the other options describe related but distinct glacier processes (melting-induced thinning and glacier expansion).

Question at position 40 What is glacial calving? A glacier breaking up or splintering so as to produce a detached piece.A glacier thinning by melting down.A glacier expanding, producing more ice coverage.

查看解析

登录即可查看完整答案

类似问题

True/False: There are still glaciers in the Sierra Nevada Mountain range.

Which of the following statements about glaciers is not true?

[REQUIRED] What type of glacier carves U-shaped features, like those seen at Yosemite National Park?

Glaciers play an important role in the water cycle and global warming. Which are true of the following statements ? (check all that apply):

Identify the bond angle and molecular shape of H2O.

Using Dalton's Atomic theory, explain the following observation. Hint: DO NOT answer with a law! The mass of the products at the end of the reaction was the same as the mass of the reactants at the beginning.

The number of valence electrons in a sulfur atom is 16.

If matter is uniform throughout and can be separated into multiple substances by physical means, it is called a(n) ________________.

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单