This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A comparison of ages calculated by carbon-14 analysis with ages known by other means results in ... (Read 149 times)

laurencescou

  • Hero Member
  • *****
  • Posts: 593
on: Jul 16, 2018
A comparison of ages calculated by carbon-14 analysis with ages known by other means results in
 
  A) a match of the ages, within known uncertainties.
  B) the calculated ages being older.
  C) the known ages being older.
  D) some calculated ages being younger and some older.

Question 2

How is the absolute age of rock determined?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vkodali

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: Radioactive-dating methods provide absolute ages of minerals. Naturally occurring radioactive parent isotopes decay to stable daughter isotopes at known measured rates. Measurement of parent and daughter isotope abundances permits calculation of rock age. Absolute ages are determined for the geologic time scale by combining radioactive-dating and relative-dating methods. Fossils present in sedimentary rocks define the time-scale boundaries. Timescale boundary ages are estimated from absolute ages of nearby igneous rocks whose relative age relationships to fossiliferous sedimentary layers are known. The oldest rock measured thus far on Earth is 4.03 billion years old, and the oldest mineral is 4.4 billion years old. Even older rocks are found on the Moon and among meteorites that have landed on Earth. The current estimated of Earth's age is 4.50  0.06 billion years.


laurencescou

  • Member
  • Posts: 593
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

CAPTAINAMERICA

  • Member
  • Posts: 325
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

DNA analysis of phylogenetic relationships among modern and extinct flightless birds by Cooper and c DNA analysis of phylogenetic relationships among modern and extinct flightless birds by Cooper and c
Comparison of 24 hours in military Comparison of 24 hours in military
A comparison of a trait (height) that shows discontinuous and continuous phenotypes in different pla A comparison of a trait (height) that shows discontinuous and continuous phenotypes in different pla
Comparison of the human LEP and mouse ob/Lep genes Comparison of the human LEP and mouse ob/Lep genes
An electropherogram showing the results of a DNA profile analysis An electropherogram showing the results of a DNA profile analysis
Comparison of an Amino Acid Sequence Comparison of an Amino Acid Sequence
Video: Anatomy and Chemical Makeup of a Single Hair (Animation)

For a complete list of videos, visit our video library