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 51 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?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Plant Cell Types (Part 2) Plant Cell Types (Part 2)
Comminuted Shatters the affected part into a multitude of bony fragments (x-ray of the femur bone) Comminuted Shatters the affected part into a multitude of bony fragments (x-ray of the femur bone)
Time-course of reprogramming mouse fibroblasts into induced pluripotent stem cells Time-course of reprogramming mouse fibroblasts into induced pluripotent stem cells
A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water. A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water.
Solve Trig Triangle Part 2 Solve Trig Triangle Part 2
Under ideal conditions, a single cell of the bacterium E. coli would divide every 20 minutes to ... Under ideal conditions, a single cell of the bacterium E. coli would divide every 20 minutes to ...
Video: Factors that affect conduction rates (myelination, axon diameter & temperature)

For a complete list of videos, visit our video library