When we first studied online dating habits in 2005, most Americans had little exposure to online dating or to the people who used it, and they tended to view it as a subpar way of meeting people.Today, nearly half of the public knows someone who uses online dating or who has met a spouse or partner via online dating – and attitudes toward online dating have grown progressively more positive.
Radiometric Dating and the Geologic Time Scale, The Talk Origins Archive. Provides brief overview of (1) relative dating and stratigraphic methods, (2) absolute dating and radiometric dating, including a table with parent to daughter isotopes and half lives of those isotopes commonly used in radiometric dating, (3) paleomagnetics and (4) geologic time. Includes tables of common radioactive parent isotopes and their stable daughter products, and half lives of common radioactive isotopes.
This group is dedicated to providing information about the scientific method as it concerns the idea of evolution in the Creation/Evolution debate.
The site provides background information about stratigraphic principles and relative time, biostratigraphy (using fossils for relative dating), and radiometric dating.
The site also provides fact sheets on the age of the Earth and isochron dating.
Digital technology and smartphones in particular have transformed many aspects of our society, including how people seek out and establish romantic relationships.
Few Americans had online dating experience when Pew Research Center first polled on the activity in 2005, but today 15% of U. adults report they have used online dating sites or mobile dating apps.
Here are five facts about online dating: Online dating has lost much of its stigma, and a majority of Americans now say online dating is a good way to meet people.
Determining the Age of Rocks and Fossils, University of California, Berkeley.
This 9-12-grade activity introduces students to age dating with exercises using relative and absolute dating. Links to various activities and lesson plans concerning relative and absolute dating. Content information about absolute and relative dating methods used by the U.
The idea of radioactive decay and half lives, a type of absolute dating, is shown through an activity using M&M's candy and graph paper. Sequencing Time, University of California, Berkeley. This 5-12-grade activity lets students place parts of their own life story into a time line so that they can better understand how geologic time is reconstructed by scientists.
Who's on First, University of California, Berkeley. This website is a book chapter about geologic time. This online version of their informative booklet contains short, content explanations about relative time, major geologic time divisions, index fossils for use in age dating, radiometric dating and the age of the earth.