Across
- 3. where two plates slide past each other
- 5. crust that makes up the continents on Earth
- 7. the isotope that decays
- 8. the third layer of the Earth.
- 11. the third highest layer of atmosphere
- 12. denser and thinner then continental crust
- 15. occurs when two tectonic plates move away from each other
- 16. brittle upper portion of the mantle and the crust
- 19. layer that lies beneath the lithosphere
- 20. the result of a type of heat transfer that only happens in fluids
Down
- 1. the emission of energy in the form of ionizing radiation
- 2. the stable isotopes
- 4. the innermost layer of Earth
- 6. A tectonic boundary where two plates are moving toward each other
- 9. pieces of Earth's crust and topmost mantle
- 10. electron antineutrinos released in the decays of radioactive elements
- 13. small natural object from space
- 14. calculates an age in years for geologic materials
- 17. vibrations in the earth that transmit energy
- 18. thickest layer of earth