« previous next »

Author Question: You are an archaeologist researching artifacts left behind by Francisco Pizzaro's conquest of Peru ... (Read 46 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?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

A cast of LB1 (left) was compared to several microcephalic skulls, amongst which is that of the micr A cast of LB1 (left) was compared to several microcephalic skulls, amongst which is that of the micr
Imaginary Thoracic Lines, Left Lateral View Imaginary Thoracic Lines, Left Lateral View
(a) The Dmanisi cranium (right) shows similarities to early African H. erectus including the Narioko (a) The Dmanisi cranium (right) shows similarities to early African H. erectus including the Narioko
A statue of a corn goddess of the Moche peoples of coastal Peru, around 400 BP. Within several centu A statue of a corn goddess of the Moche peoples of coastal Peru, around 400 BP. Within several centu
This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f
Francisco Goya. The Tauromaquia: The Spirited Moor Gazul Is the First to Spear Bulls according to ... Francisco Goya. The Tauromaquia: The Spirited Moor Gazul Is the First to Spear Bulls according to ...
Video: Antidiuretic hormone (vasoconstriction, water reabsorption & sweat inhibition)

For a complete list of videos, visit our video library