Earth's History Review

Which conclusion can be made when observing multiple undisturbed rock layers?

• shallow layers are older than the deeper layers

• deeper layers are older than the shallow layers

• deeper layers are younger than the shallow layers

• shallow layers are the same age as the deeper layers

Tags

NGSS.MS-ESS1-4

Based on the law of superposition, which best describes the ages of four undisturbed rock layers relative to one another?

• all rock layers of rock were deposited at about the same time and are about the same age

• youngest rock layer is found on top, and the older layers are closer to the center of Earth

• oldest rock layer is found on top, and the younger layers are closer to the center of the Earth

• youngest rock layer is found on the bottom, followed by the oldest layer and then the younger layer

Tags

NGSS.MS-ESS1-4

Which process would be the most effective in determining the age of fossil embedded in rock?

• relative dating

• absolute dating

• use of index fossils

• use of core sampling

Rock layers were found containing 30kg of radioactive elements that had a half life of 5 million years. How old were the rock layers if scientists determined that the samples had originally contained 120kg of the radioactive materials?

• 5 million yrs

• 10 million yrs

• 15 million yrs

Tags

NGSS.HS-PS1-8

Which best explains the use of radioactive dating?

• determine the presence of index fossils

• determine the relative age of a rock layer

• determine the absolute age of a rock layer

• determine changes in the surface of the Earth

Tags

NGSS.HS-PS1-8

Which material from an archaeological dig is least likely to be studied using radioactive isotope carbon-14?

• bone fragment of a fish

• granite cutting tool

• tooth of a mammal

• wooden tool handle

Which process allows scientists to compare rock layers with others in a sequence to determine their age?

• radiometric dating

• absolute dating

• relative dating

Tags

NGSS.MS-ESS1-4

Which best describes a fossil that helps determine the relative age of a rock layer?

• trace fossil

• index fossil

• radioactive fossil

• unconformity fossil

Tags

NGSS.MS-ESS1-4

Which statement is true?

• oldest layers of rock and soil are closest to the surface of the earth

• youngest layers of rock and soil are farther away from the surface of the earth

• Carbon-14 dating is an example of relative dating, and the law of superposition is an example of absolute dating

• Absolute geologic dating and relative dating are 2 methods used by scientists to determine the age of geologic evidence.

Tags

NGSS.MS-ESS1-4

What makes a good index fossil?

• fossil not commonly found in rocks

• fossil that lived throughout geologic time

• fossil that lived during 3 geologic time periods

• fossil that lived during only 1 geologic time period