Question

The Role of Sedimentation in Earth's Geography

Sedimentation is a fundamental process in shaping Earth's surface, particularly in forming
land features such as river deltas. The claim here is that sedimentation contributes
significantly to the expansion of landmasses. The evidence for this claim can be seen in
the formation of river deltas, where rivers deposit sediments they carry as they flow into
slower-moving or standing water bodies, like oceans or lakes. Over time, these deposits
accumulate, gradually building up the delta region and expanding the land. This process
can be observed at places like the Mississippi River Delta. The reasoning behind
sedimentation's role is based on the gradual accumulation of materials, transported by
water, which over time results in significant geological changes. This slow but steady
process is essential in understanding the dynamic nature of Earth's surface.
What is the main claim about sedimentation in the passage? *
O Sedimentation is the fastest process in changing Earth's surface.
O Sedimentation causes erosion of river banks.
O Sedimentation contributes to the expansion of landmasses.
O Sedimentation primarily occurs in mountainous regions.
2 points

Answer 1

The passage's main claim is that sedimentation plays a significant role in the expansion of landmasses by depositing sediments which over time create new land features like river deltas. The correct answer is option: c) Sedimentation contributes to the expansion of landmasses.

Step-by-step explanation:

The sedimentation in the passage is that it contributes significantly to the expansion of landmasses. This geological process involves the deposition of sediment, which generally occurs when rivers or streams slow down as they enter oceans or lakes.

These sediments, over time, build up and form new geological features such as river deltas, exemplified by the Mississippi River Delta, thereby expanding the Earth's landmasses.

The sedimentary rocks formed from these deposits, such as sandstones and shales, contain valuable information about Earth's history and offer insights into ancient environments and resources.