GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Floods eroded the sandstone away from the canyon walls.
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Glaciers eroded the canyon rock as they melted and moved.
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Ice wedged into cracks in the rock and weathered the canyon walls.
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Wind blew large rocks that smashed against the canyon walls.
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Detailed explanation-1: -Which of these best describes how this canyon was most likely formed? Glaciers eroded the canyon rock as they melted and moved.
Detailed explanation-2: -Which of these describes how a canyon was most likely formed? Floods eroded the sandstone away from the canyon walls.
Detailed explanation-3: -In most cases no, canyons are not formed by wind erosion. Despite the majority of canyons forming by water erosion, scientists have identified the power of wind erosion to form some canyons. There are some canyons in the Andes mountains in Chile formed by wind.
Detailed explanation-4: -The Grand Canyon is a mile-deep gorge in northern Arizona. Scientists estimate the canyon may have formed 5 to 6 million years ago when the Colorado River began to cut a channel through layers of rock. Humans have inhabited the area in and around the canyon since the last Ice Age.