Geologic Time Scale & Index Fossils Quiz - Period 4 - Jessica Soria | Biblioteka

1

Scientists are able to gather evidence about Earth's history through-

Fossils ONLY.

Both rock strata and fossils.

Rock strata ONLY.

1

Based on the Geologic Time Scale, the order of the eras of Earth are-

Archean, Proterozoic, Paleozoic, Mesozoic, and Cenozoic

Cenozoic, Mesozoic, Paleozoic, Proterozoic, and Archean

Paleozoic, Cenozoic, Proterozoic, Archean, and Mesozoic

1

According to the Law of Superposition-

the youngest rock layers are found at the bottom and the oldest layers at the top.

the youngest rock layers are found at the top and the oldest layers at the bottom.

1

These three hills used to be one hill in the past before they separated. Based on the law of superposition, which fossil is the oldest?

Ammonite

Trilobite

Coral

Fern

1

Look at the hill on the right. Based on the law of superposition, which fossil is the youngest?

Fern

Ammonite

Trilobite

Coral

3

An index fossil is a fossil that only shows up in one rock layer (a single rock layer has the same color). Study the three hills and identify the three index fossils.

Carefully read through the scenario, chart, and prompt before answering the question.

Prompt: Examine the Hermit Shale strata (265 million years ago) and the Toroweap Formation (255 million years ago). Based on the rock strata and the fossils found in each strata, how did the environment and life in the Grand Canyon change over that period of time?

1

Choose the best claim.

Based on the fossils found in the rock strata, the environment transformed from a terrestrial (land) environment to an aquatic environment with marine organisms.

Based on the fossils found in the rock strata, the environment transformed from an aquatic environment to an terrestrial (land) environment with land organisms.

2

Choose the best 2 pieces of evidence from the chart.

The Hermit Shale layer has terrestrial fossils such as plants and reptiles while the Toroweap Formation has aquatic fossils such as brachiopods and sea lilies

The Hermit Shale is older than the Toraweap Formation.

The Toraweap Formation is older than the Hermit Shale.

The oldest layer is the Tapeats Sandstone.

2

Write your reasoning. (For full credit, you should restate your claim, cite at least 2 pieces of evidence, and use the Law of Superposition to explain how your evidence proves your claim.)