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

Author Question: Why is zoic part of so many names on the geologic time scale? What will be an ideal ... (Read 49 times)

charchew

  • Hero Member
  • *****
  • Posts: 579
on: Jul 14, 2018
Why is zoic part of so many names on the geologic time scale?
 
  What will be an ideal response?

Question 2

Why is radiometric dating a reliable method for determining numerical dates?
 
  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

ricroger

  • Sr. Member
  • ****
  • Posts: 352
Reply #1 on: Jul 14, 2018
Answer to Question 1

Zoic refers to life, and because fossils were used to differentiate Earth history for the most part, zoic is an appropriate ending for the names of the divisions.

Answer to Question 2

The rates of decay for many isotopes have been precisely measured and do not vary under the physical conditions that exist in Earth's outer layers. Therefore, each radioactive isotope used for dating has been decaying at a fixed rate ever since the formation of the rocks in which it occurs, and the products of decay have been accumulating at a corresponding rate.


charchew

  • Hero Member
  • *****
  • Posts: 579
Reply #2 on: Jul 14, 2018
Thank you


ricroger

  • Sr. Member
  • ****
  • Posts: 352
Reply #3 on: Jul 14, 2018
No problemo


« previous next »
 

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Solar particles interact with Earth's magnetosphere. Sizes not to scale. Solar particles interact with Earth's magnetosphere. Sizes not to scale.
An Estimate of the Time of Global Peak Conventional Oil Production An Estimate of the Time of Global Peak Conventional Oil Production
What are examples of ideal forms? What are examples of ideal forms?
How to use the laws of exponents to simplify an expression (Part 1) How to use the laws of exponents to simplify an expression (Part 1)
Good Old War - Part Of Me [Audio] Good Old War - Part Of Me [Audio]
Sk September 12 2023 Part 2 Sk September 12 2023 Part 2
Video: Sigmoidoscopy

For a complete list of videos, visit our video library