Question

Sediments on Earth's surface sometimes differ in composition from the underlying bedrock. What can you conclude from this observation?

A. Bedrock is broken down by weathering.
B. Bedrock is formed from sediments.
C. Erosion moves sediment to new locations.
D. Sediments are formed from the local bedrock.

Answer 1

Option (C)

Step-by-step explanation:

The bedrocks are defined as those rocks that are very hard and resistant and present below the surface rock materials. These are undeformed rocks that are present in a particular place for a long period of time. For example, granite, sandstone, and gravel.

The sediments refer to those broken fragments such as rock particles, and soil particles, that are formed from the weathering of rocks. These sediments are usually lifted from one place and are transported to some other place by agents such as wind, water, and ice.

These sediments when eroded from other places and deposited in a new environment, then it shows differences in terms of composition between the sediments and the bedrocks.

Thus, the correct answer is option (C).

Answer 2

The bedrock is known as the solid, hard rock which is present beneath of the surface materials, such as the gravel and the soil. The bedrock may be composed of granite, while the sediments having a different composition than them are transported from different areas. The sediments can be moved from one place to another by the processes such as erosion. This transportation leads to their different compositions of the bedrock and sediments.

Hence, the answer is option (c) - erosion move sediments to new locations.