Geologic Time Scale and Fossils Reading Comprehension

What is the age of the Earth according to the passage?

• 4.6 billion years

• 3.5 billion years

• 5.2 billion years

• 6.0 billion years

What does the Geologic Time Scale represent?

• A timeline of Earth's history based on major changes

• A timeline of human history

• A timeline of the solar system

• A timeline of the universe

According to the law of superposition, where are the oldest rock layers found?

• At the bottom

• At the top

• In the middle

• Randomly distributed

What are index fossils used for?

• Determining the relative age of rock layers

• Determining the absolute age of rock layers

• Identifying the type of rock

• Measuring the thickness of rock layers

Which organism is mentioned as an example of an index fossil?

• Ammonites

• Dinosaurs

• Trilobites

• Mammoths

How old are rock layers containing ammonite fossils?

• Between 190-185 million years old

• Between 200-195 million years old

• Between 180-175 million years old

• Between 170-165 million years old

What process can lead to the formation of fossils in sedimentary rock strata?

• Minerals replacing the hard parts of organisms

• Erosion of rock layers

• Volcanic activity

• Earthquakes

Can we tell the exact age of the fossils based on the diagram? Why or why not?

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Rank the following fossils (A, B, C) from oldest to youngest.

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Based on the evidence in this diagram, do you think that life began in the ocean or on land? Provide evidence from the diagram to support your answer.

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