Relative Dating

Imagine trying to organize a stack of old family photos without any dates on them. Just like sorting these photos by observing the changes in hairstyles, clothing, and the age of people in them, relative dating involves comparing the layers of fossils or rocks to determine their age order. The way you identify a younger-looking version of a relative in one photo and an older version in another is akin to how scientists use the position and characteristics of fossils within rock layers to figure out which is older, helping them piece together the history of life on Earth.
Practice Version

Relative Dating: A method of comparing fossils or rocks to determine which is older. Relative dating. It tells us the order in which events happened, without knowing their exact ages.