Relative age — Science definition
Order without numbers: in undisturbed layers, deeper is older, which gives sequence but no durations.
Where it is taught
- Fossils, Rock Layers & Life History — Evolution, Evidence & Life History, Life Science & Scientific Inquiry, Grade 7
In use
Relative age is order without numbers: in undisturbed layers, deeper means older, so a fossil below another is earlier.
Fossils, Rock Layers & Life History