TCI L22 Earth's History & L23 Fossils & the History of Life

Front

Which process would be most effective in determining the age of fossils embedded in rock? Options: relative dating, absolute dating, use of index fossils, use of core sampling

Back

absolute dating

Front

Which statement is true? Options: The oldest layers of rock and soil are closest to the surface of the earth, The youngest layers of rock and soil are farther away from the surface of the earth., Absolute dating and relative dating are two methods used by scientists to determine the age and sequence of geologic events.

Back

Absolute dating and relative dating are two methods used by scientists to determine the age and sequence of geologic events.

Front

What role do faults play in the Law of Superposition?

Back

Faults are younger than the layers they cut through.

Front

Which statement best describes the Law of Superposition? Options: Each sedimentary layer of rock represents 1,000 years of Earth's age, much like the rings of a tree. In undisturbed layers of sedimentary rocks, the upper rock layers are older than the lower rock layers. In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks. Rocks that form near volcanoes are older than surrounding rock.

Back

In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.

Front

The Law of Superposition helps scientists to determine what?

Back

The relative age of rock layers

Front

According to the law of superposition, the oldest fossils are found

Back

Near the bottom of the rock layers

Front

The age of a rock compared to other rocks around it is:

Back

relative age

Front

The diagram shows a section of land that has been undisturbed and includes a fossil. What can be concluded about the fossil?

Back

The fossil is approximately the same age as the limestone.

Front

Geologists studied fossils taken from the top of a mountain. The chart lists several fossils taken from this location as well as their original habitat.What can be concluded based on the fossil evidence? Options: The mountain climate was once much warmer than it is today., The mountain climate was once much colder than it is today., The mountain was covered by water at some point in the past., The elevation in the area was much higher at some point in the past.

Back

The mountain was covered by water at some point in the past.

Front

The time line shows the evolution of life forms during the geologic time scale.Which statement is supported by the time line? Options: Dinosaurs became extinct 150 million years ago., Birds evolved approximately 275 million years ago., Animals started inhabiting land approximately 300 million years ago., Insects and amphibians appeared approximately 325 million years ago.

Back

Insects and amphibians appeared approximately 325 million years ago.