Across
- 3. daughter of the parent isotope
- 6. the absolute center of our earth
- 9. two tectonic plates sliding against each other
- 10. decay the transformation of a parent isotope to a daughter isotope
- 12. tectonic plates coliding
- 14. the half of the mantle closer to the core
- 16. the Earth's thickest layer
- 17. the half of the mantle closer to the crust
- 19. the Earth's crust continents and country's eddition
Down
- 1. the transfer of heat within the mantle that moves plate tectonics
- 2. sandwiched between the inner core and the mantle
- 4. shoot off a neutrino decaying
- 5. when a meteor lands on the earth
- 7. using radioactive decay to find the exact age of an object
- 8. parent of the daughter isotope
- 11. the Earth's crust where boats roam
- 13. what we use to find how dense the Earth's core is
- 15. tectonicv plates move apart
- 18. crust of the earth