Across
- 2. reduces half its initial value
- 4. the rule that the rocks on top are younger and the rocks on the bottom are older
- 6. the rule that a younger layer cuts into an older layer
- 7. knows if it is younger or older without knowing specific ages
- 8. specific time and date of a fossil
- 9. the rule that rocks inside of another rock are older than the rock it is in
- 10. when the same fossil is in only one layer
Down
- 1. ionizing radiation of particles
- 3. helps with relative dating
- 5. series of layers of rock in the ground