Biology definition for relative dating dating more than one woman
Scientists who study the ancient Earth have been working for hundreds of years to build an accurate timeline of the formation of the planet and the evolution of all life. In order to build and improve this timeline, scientists must have several types of accurate methods they can use to determine the ages of materials.
There are two main categories by which they do this: relative age dating and absolute age dating.
The absolute age of a material is much more desirable when constructing the timeline of our planet because it does not rely on comparisons to other materials.
In order to use this type of dating, the material must be heated to 500 degrees Celsius and the resulting light is measured and analyzed.
Dendrochronology: This is just a fancy term for counting tree rings!
Instead of saying a material is older or younger than something else, scientists can simply report the age in years.
Imagine it this way: If you have any siblings, using relative age dating would be like saying, 'I am older than my brother but younger than my sister,' but using absolute age dating would be like saying, 'I am 23 years old.' Since scientists work with many different types of Earth materials (rock, fossils, etc.), there are many types of absolute age dating.
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This method is a bit vague, which is why modern scientists have developed many methods by which to determine the absolute age of Earth materials.