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Practice Listening: Multiple Choice, Single Answer ID: #41042 Short Fossilisation
Instructions ›
You will see a video about the process of fossilisation. Listen to the recording and answer the multiple-choice question by selecting the correct response. Only one response is correct.

Transcript:

Fossils are the remains or the marks of formerly living things. Most fossils form as part of sedimentary rock. This process begins when plant or animal remains are quickly buried in sediments. That is, the layers of mud or sand that settle out of water. After the remains are buried, mineral rich water may seep down through the sediments and deposit its minerals in the remains. These minerals harden and strengthen the fossil over thousands of years. More and more sediment layers form on top of the layer containing the fossil. The weight of the upper layers presses down on the fossil bearing sediment and eventually turns it into rock. In many regions of the earth, earthquakes, glaciers, erosion, and other factors have exposed layers of sedimentary rock. Scientists often search for fossils in these areas.

What is the initial step in the process of fossilisation according to the video?

* Listen to the recording and select the correct answer

Result:

AI explanationShows the answer. Tap to open.
Option 1: "Plant or animal remains are quickly buried in sediments."

Explanation: This option is correct because the text clearly states that the fossilization process begins when plant or animal remains are quickly buried in sediments. This is the initial step that sets the stage for the subsequent processes of mineralization and rock formation.

Option 2: "The remains are strengthened by minerals."

Explanation: While it is true that the remains are eventually strengthened by minerals, this occurs after the initial step of burial. Therefore, this option does not accurately describe the first step in the fossilization process.

Option 3: "Sediments turn into rock due to pressure."

Explanation: This statement refers to a later stage in the fossilization process, where the weight of upper sediment layers turns the fossil-bearing sediment into rock. It does not address the initial step, which is the burial of remains.

Option 4: "Earthquakes and erosion expose sedimentary rock."

Explanation: This option describes external factors that can reveal fossils after they have formed, rather than the initial step of fossilization. It does not relate to the process of how fossils are created.

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