Which of the following is an example of the principle of uniformitarianism?
A)It is not possible to know how Earth processes have changed over time therefore it is not possible to deduce how Earth's ancient landforms evolved.
B)The processes by which streams carve valleys at present are the same as those that carved valleys 500 million years ago.
C)Catastrophic events,such as major landslides,earthquakes,and volcanic episodes,are the primary drivers of geomorphological change.
D)Earth's geological history is mostly uniform and homogeneous,existing now as it mostly always has with the exception of minor recent changes.

Question

Quizplus · Accepted Answer

Uniformitarianism is the idea that the processes that operate on Earth's surface today, such as erosion, deposition, and tectonic activity, are the same processes that have operated in the past. This principle suggests that Earth's geologic history can be understood by observing present-day processes and their effects. Choice B exemplifies this principle by stating that the processes that carve valleys today are the same processes that carved valleys in the past, indicating that the principle of uniformitarianism is at work. The other choices do not reflect the principle of uniformitarianism.

Which of the Following Is an Example of the Principle