Across
- 3. determines the age of the rock in years through chemistry
- 5. the phase of matter the material in the inner core is in
- 6. accretion begins
- 9. infinitely dense and infinitely hot
- 11. matter and energy are “locked” in the form they are
- 12. studying these helped reveal the layers and characteristics of the interior of the Earth
- 14. type of plate boundary where the plates move past each other
- 15. measures the amount of time in years it takes a group of atoms that have not decayed yet to decay
- 16. dark energy takes over
- 19. the process that moves continents across the surface of the Earth due to the convection of the material in the mantle
- 20. type of plate boundary where the plates move away from each other
Down
- 1. the process the Sun undergoes to produce energy in its core
- 2. an important discovery that helped determine the numerical ages of rocks and minerals
- 4. the heaviest element a star can create in their core
- 7. type of bonding where electrons are shared between two nonmetal atoms
- 8. type of bonding where electrons are moved from a metal atom to a nonmetal atom
- 10. type of plate boundary where the plates move toward each other and collide
- 13. in a tiny fraction of a second, space expanded rapidly due to annihilation
- 15. internal energy that is stored and produced in the Earth
- 17. determines the age of the rock by comparing it to another thing or event.
- 18. a unit of distance that measures how far light travels in one year