Geologic Time, Fossils, Relative and Absolute Dating

Which of these periods is the youngest ?

• Permian

• Triassic

• Jurassic

• Cretaceous

Tags

NGSS.MS-ESS1-4

Which two fossils would make good index fossils?

• Gastropod

• Ammonite

• Trilobite

• Crinoid

Which fossil is the oldest?

• Coral

• Trilobite

• Crinoid

• Gastropod

Tags

NGSS.MS-LS4-1

Which fossil is the youngest?

• Trilobite

• Fern

• Coral

• Ammonite

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Radiometric dating involves measuring concentrations of ______________generated during radioactive decay.

• molecules

• isotopes

• neutrons

• sediment

Tags

NGSS.HS-PS1-8

Every 5,730 years, what percentage of Carbon 14 decays?

• 100

• 75

• 50

• 25

Scientists can determine the age of fossils by studying the rate of decay of radioactive elements, such as uranium, within the rocks and fossils. This type of fossil dating is called ______________________________.

• absolute dating

• chemical dating

• relative dating

• mold dating

Tags

NGSS.HS-PS1-8

The law of superposition allows geologists to determine exact timelines. (T or F)

• True

• False

Tags

NGSS.MS-ESS1-4

Which fossil is the youngest?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-4

A scientist finds the bones of a dinosaur. What could help the scientist determine the approximate age of the dinosaur bones?

• the birds living in the area of the bones

• the weather conditions in the area of the bones

• the kinds of trees living in the area of the bones

• the index fossils in the area of the bones