Earth's Geological History

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

• The fossil is younger than the limestone.

• The fossil is older than the shale.

• The fossil is approximately the same age as the limestone.

• It is approximately the same age as the sandstone.

The time line shows the evolution of life forms during the geologic time scale.Which statement is supported by the time line?

• 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.
  

Pangaea refers to a...

• large supercontinent

• Greek superhero

• Tropical fern

• Mass extinction

A paleontologist just discovered a Flower fossil. In which layer do you think the fossil was found in?

• Cenozoic Layer

• Mesozoic Layer

• Paleozoic Layer

• Late Proterozoic Layer

The geologic time scale is divided up 4 large units of time called:

• Eons

• Eras

• Periods

• Epochs

Approximately how many years ago did Earth form?

• 460 years

• 460,000 years

• 4.6 million years ago

• 4.6 billion years ago

What is a mass extinction?

• The emergence of new life species to appear in a short time period.

• The emergence of very large species.

• The loss or death of a large species.

• The loss or death of many different species in a short time period.

How are fossils created?

• Traces of organisms get turned into stone.
• Dead organisms are quickly buried for millions of years.
• Animals get trapped.
• All of the above

Which of the following is a requirement of index fossils?

• Lived over a vast time period but found only in one location

• lived only for a short time but was found all over the world

• Not a prevalent species at any time

• Still alive today

If scientists found this fossil, what could they infer?

• what fish are like today
• that this fish lacked oxygen
• what kind of animal ate this fish
• that water once covered the area