Topic: Isotopes: How Do Scientists Know that Humans Cause Global.

By Alecia M. Spooner . The most common question that people ask when confronted with all the scientific data about global climate warming is how scientists can be certain that humans are responsible for the increase in greenhouse gases, specifically carbon dioxide.

1 Re: How do carbon dating work

Carbon 14 Dating Calculator How Accurate Is Radiocarbon Dating? Radiocarbon ages less than 3,500 years old are probably accurate. However, before accepting any radiocarbon date, one should know how the technique works, its limitations, and its assumptions.

2 Re: How do carbon dating work

Carbon-14 | Answers in Genesis Carbon-14 dating is a method, based on unprovable assumptions about the past, used to date things that contain carbon (e.g. fossils). It can only give maximum ages of around 50,000 years and yet C-14 has been found in fossils and diamonds thought to be millions and billions of years old respectively.

3 Re: How do carbon dating work

6. How long is material radioactive? carbon-14. The older a sample of a radioactive material, the less radioactive it is. The decrease in radioactivity follows a characteristic pattern shown in the graph or decay curve.. The y axis can represent the % radioisotope left OR the measured radioactivity.

4 Re: How do carbon dating work

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5 Re: How do carbon dating work

Is Carbon-Dating Accurate? | Radiometric dating | Rate of. A further example from a lava flow off the coast of Hawaii shows similar discrepancies. If dated with the carbon-14 method, the flow appears to be less than 17,000 years old, but dating with the potassium argon method gives dates of 160,000 to 43 million years.

6 Re: How do carbon dating work

Carbon - Structure of carbon allotropes | Britannica.com Carbon - Structure of carbon allotropes: When an element exists in more than one crystalline form, those forms are called allotropes; the two most common allotropes of carbon are diamond and graphite. The crystal structure of diamond is an infinite three-dimensional array of carbon atoms, each of which forms a structure in which each of the bonds makes equal angles with its neighbours.

7 Re: How do carbon dating work

Frosty the Snowman Meets His Demise: An Analogy to Carbon. To develop the idea that carbon dating is based on gathering evidence in the present and extrapolating it to the past. Students will use a simple graph to extrapolate data to its starting point. This lesson is the third in a three-part series about the nucleus, isotopes, and radioactive decay. The.

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How Do Batteries Work? - Chemistry for Kids | Mocomi Hi, Actually, Mocomi is a fun learning website for kids of all ages, packed with fun activities, learning games, educational videos, interactive stories and more.

9 Re: How do carbon dating work

Human Evolution Evidence | The Smithsonian Institution's. Scientists have discovered a wealth of evidence concerning human evolution, and this evidence comes in many forms. Thousands of human fossils enable researchers and students to study the changes that occurred in brain and body size, locomotion, diet, and other aspects regarding the way of life of.

10 Re: How do carbon dating work

Radioactive Dating Game - Radiometric Dating | Carbon. Learn about different types of radiometric dating, such as carbon dating. Understand how decay and half life work to enable radiometric dating. Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object. Explain the concept of half-life.