Absolute Dating

Which is used in radioactive dating?

• Carbon-14

• Index fossils

• Hydrochloric acid

• Law of superposition

Tags

NGSS.HS-PS1-8

Through relative dating, a geologist finds a fossil that is approximately 10,000 years old. Which radioactive element would geologist use to accurately calculate the fossils age?

• Gallium 67 with a half life of 78 hours

• Carbon-14 with a half-life of 5,700 years

• Plutonium-238 with a half-life of 88 years

• Iodine-129 with a half-life of 16 million years

Which method would be best for scientist to use to determine the absolute age of a Precambrian igneous rock.

• index fossil

• law of superposition

• radiometric dating

• law of original horizontality

Which can be used to find the exact age of a rock specimen?

• ice cores

• radioactive dating

• index fossils

• trace fossils

Tags

NGSS.HS-PS1-8

NGSS.HS-ESS1-5

Scientists use radiometric dating (radioactive decay) to measure...

• relative time (dating)

• absolute time (dating)

• half-lives

• time of day

Tags

NGSS.HS-PS1-8

How does absolute age differ from relative age?

• only absolute dating indicates which rock is older than another
• only absolute dating finds the age in years
• only relative dating finds the age in years

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

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

According to the law of superposition, which layer is the youngest?

• A
• B
• C

Tags

NGSS.MS-ESS1-4

Scientists use radioactive decay to measure...

• relative time
• absolute time
• half-lives
• time of day

Tags

NGSS.HS-PS1-8

The length of time required for half of the radioactive atoms in a sample to decay is its...

• era
• age
• half-life
• eon

Tags

NGSS.HS-PS1-8