Earth science

2. When two plates come together
5. the upper layer of the earth's mantle, below the lithosphere
7. formed where two tectonic plates pass laterally by one another.
10. calculates an age in years for geologic materials by measuring the presence of a short-life radioactive element,
13. any fairly small natural object from interplanetary space
15. the rigid outer part of the earth, consisting of the crust and upper mantle.
17. liquid, iron-nickel layer of the Earth between the solid inner core and lower mantle
18. a neutrino or antineutrino emitted during the decay of naturally-occurring radionuclides in the Earth.
20. The original unstable isotope is called the parent isotope, and the more stable form is called?

1. the mostly solid bulk of Earth's interior
3. composed of the oceanic lithosphere and the thicker continental lithosphere
4. , region of the upper atmosphere between about 50 and 80 km (30 and 50 miles) above the surface of the Earth.
6. the emission of energy in the form of ionizing radiation
8. The original unstable isotope
9. vibrations in the earth that transmit energy and occur during seismic activity such as earthquakes, volcanic eruptions, and even man-made explosions.
11. heat-driven cycles that occur in the air, ocean, and mantle.
12. the relatively thick part of the earth's crust that forms the large landmasses.
14. is the denser crustal layer of Earth that makes up portions of tectonic plates in deep oceans.
16. a hot, dense ball of (mostly) iron.
19. when two tectonic plates move away from each other.