« previous next »

Author Question: You are an archaeologist researching artifacts left behind by Francisco Pizzaro's conquest of Peru ... (Read 16 times)

Chloeellawright

  • Hero Member
  • *****
  • Posts: 588
on: Jul 16, 2018
You are an archaeologist researching artifacts left behind by Francisco Pizzaro's conquest of Peru in the 1530s.
 
  In order to confirm the authenticity of the leather artifacts, you are performing radiometric dating using an isotope pair that has a half-life of 250 years. In order for the artifacts to date back to the time of Pizzaro's conquest, approximately how much original radioactive isotope must be left in the artifacts?
  A) 50
  B) 25
  C) 75
  D) 12.5

Question 2

What is the definition of a half-life?
 
  A) The parent isotope half of a radiometric dating pair
  B) Half the time it takes for the parent isotope to decay to the daughter
  C) The time it takes for half of the parent isotope to decay to the daughter
  D) Half of the alpha particles necessary to decay at a steady rate


kardosa007

  • Sr. Member
  • ****
  • Posts: 300
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Right Brain vs. Left Brain Right Brain vs. Left Brain
Quadrants of left breast and axillary tail of spence Quadrants of left breast and axillary tail of spence
Moche Lord with a Feline, from Moche Valley, Peru, Moche culture. Moche Lord with a Feline, from Moche Valley, Peru, Moche culture.
The exhaust drives the turbine wheel on the left, which is connected to the impeller wheel on the ... The exhaust drives the turbine wheel on the left, which is connected to the impeller wheel on the ...
The left-hand rule states that if a coil is grasped with the left hand, the fingers will point in ... The left-hand rule states that if a coil is grasped with the left hand, the fingers will point in ...
(a) The phagocytic process, beginning in the upper left with bacterial attachment and phagocytic ... (a) The phagocytic process, beginning in the upper left with bacterial attachment and phagocytic ...
Video: Stroke volume - preload, sarcomere length and Frank -Starling law

For a complete list of videos, visit our video library