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

Question

BlackTom AI · Accepted Answer

Question restatement: The prompt asks which type of glacier carves U-shaped features, as seen at Yosemite National Park.
Option 1: Valley glaciers. These are the classic sources of U-shaped valleys in mountainous regions like Yosemite, formed by the glacial ice eroding the valley walls and floor as it advances and retreats. The distinctive U-shape is a hallmark of glaciation from valley glaciers.
Option 2: Ice sheets. Ice sheets are vast, thick ice masses that cover large continental areas (e.g., Antarctica, Greenland) and they erode landscapes on a much broader scale, typically creating broad, smooth, flat features rather than narrow U-shaped valleys. Their deposits and erosional patterns differ from the classic Yosemite-style valley carving.
Option 3: Underground glaciers. Also known as subglacial or englacial glaciers, these produce erosion at depth and can influence terrain in complex, localized ways, but they are not the standard culprits described when referencing the iconic U-shaped valleys of Yosemite. The surface expression is less typical for these formations.
Option 4: Ice rivers. This term is less conventional in geomorphology; glaciers do not typically get described as ice rivers. Glacial ice flows are components of the glacier system, but the label ice rivers does not correspond to a recognized primary agent of U-shaped valley formation, making it an incorrect framing for this feature.
In summary, the striking U-shaped valleys of Yosemite are the classic product of valley glacier activity, where the glacier’s powerful erosive action sculpts the valley floor and sides. The other options describe glacial or related phenomena that do not produce the same distinctive U-shaped profile typical of a valley glacier.

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

类似问题

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.

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

Which of the following statements about glaciers is not true?

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

A 62.9 kg lady is standing on a weighing scale in an elevator as shown in the diagram below. Assume gravitational acceleration = 15 ms-2 Given that the elevator is accelerating upwards at 3.7 ms-2 , determine the magnitude of the normal force on the lady.

An object is fired from ground level at an angle of 31.9 degrees to the horizontal. Taking acceleration due to gravity = 7.65 ms-2 If the initial speed is 5.6 ms-1, how far from the starting point will it hit the ground? Assume air resistance is negligible.

Which of the following equations of motion would be used to calculate the displacement given the initial and final velocities as well as the acceleration?

A 51.8 kg lady is standing on a weighing scale (calibrated to 9.81 ms-2) in an elevator as shown in the diagram below. The scale is then calibrated to 7.67 ms-2 Given that the elevator is accelerating downwards at 2.2 ms-2 , determine the reading on the scale.

更多留学生实用工具

智能学习助手

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