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

Author Question: Which of the following radioactive isotopes would be best for age-dating a rock from 50,000 years ... (Read 89 times)

cnetterville

  • Hero Member
  • *****
  • Posts: 547
on: Jul 14, 2018
Which of the following radioactive isotopes would be best for age-dating a rock from 50,000 years ago?
 
  A) uranium-238
  B) carbon-14
  C) potassium-40
  D) thorium-232

Question 2

Who first formulated the principle of uniformitarianism?
 
  A) Aristotle
  B) Lyell
  C) Steno
  D) Hutton


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cassie_ragen

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: D


cnetterville

  • Member
  • Posts: 547
Reply 2 on: Jul 14, 2018
Wow, this really help

covalentbond

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Great answer, keep it coming :)

« 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?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

To examine a child’s ear, the pinna should be pulled back and up for children over 3 years; the pinn To examine a child’s ear, the pinna should be pulled back and up for children over 3 years; the pinn
The argon-argon method is useful for dating volcanic sediments. The argon-argon method is useful for dating volcanic sediments.
Mount Pinatubo caused ~1˚C cooling for up to 5 years Mount Pinatubo caused ~1˚C cooling for up to 5 years
Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take
Radioactive Decay Radioactive Decay
Earth 150 Million Years Ago Earth 150 Million Years Ago
Video: Introduction to Insulin

For a complete list of videos, visit our video library