« previous next »

Author Question: Long-lived radioactive isotope pairs used in radiometric dating have half-lives of the magnitude of ... (Read 103 times)

JGIBBSON

  • Hero Member
  • *****
  • Posts: 538
on: Jul 15, 2018

Long-lived radioactive isotope pairs used in radiometric dating have half-lives of the magnitude of
  ___________________ _ or ___________________ _ of years. Fill in the blank(s) with the appropriate word(s).



Question 2

The most accurate radiometric dates are obtained from ___________________ _ rocks. Only in very
  unusual circumstances can ___________________ _ rocks be radiometrically dated. Fill in the blank(s) with the appropriate word(s).



mjenn52

  • Sr. Member
  • ****
  • Posts: 351
Reply #1 on: Jul 15, 2018
Answer to Question 1

millions, billions

Answer to Question 2

igneous, sedimentary
igneous, metamorphic



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Apparent Magnitude Scale Apparent Magnitude Scale
The oxygen isotope curve illustrates the ratio between 16O and 18O. The oxygen isotope curve illustrates the ratio between 16O and 18O.
Socrates's commitment to rational inquiry lived on through his disciples and became the ... Socrates's commitment to rational inquiry lived on through his disciples and became the ...
Feng Mengbo, Long March: Restart. Feng Mengbo, Long March: Restart.
Part of a Semantic Network in Long-Term Memory Part of a Semantic Network in Long-Term Memory
Video: Types of Shock (Part 2 of 2)

For a complete list of videos, visit our video library