Puzzling Earth

4. a neutrino or antineutrino emitted during the decay
7. vibrations in the earth that transmit energy and occur during seismic activity
11. When two plates come together
13. upper atmosphere
15. The original unstable isotope
17. a layer of silicate rock between the crust and the outer core.
19. the emission of energy in the form of ionizing radiation.

1. formed where two tectonic plates pass laterally by one another.
2. occurs when two tectonic plates move away from each other.
3. located between the inner core and the mantle
5. that makes up portions of tectonic plates in deep oceans.
6. consisting of earth crust and upper mantle
8. a hot, dense ball of (mostly) iron
9. Crust the layer of granitic, sedimentary, and metamorphic rocks
10. a method of dating geological
12. the more stable form
14. which the warmer portions rise and the colder portions sink
15. Plate motions cause mountains to rise where plates push together, or converge, and continents to fracture and oceans to form where plates pull apart, or diverge
16. the upper layer of the earth's mantle
18. rock that originated in outer space and has fallen to the surface of a planet or moon.