Complete the Geologic Crossword Puzzle that featuring Earth Science vocabulary.

6. - largest moon of Saturn
7. - the period of time it takes for a substance undergoing decay to decrease by half.
8. - a method of determining numerical age of rocks using radioactive decay.
12. - solid material that is move and deposited in a new location
13. - an early stage in the formation of star resulting from the gravitational collapses of gases.
15. - formed from previously existing rock such as igneous and sedimentary rocks.
19. - the deterioration of rocks, soils and minerals through contact with water, atmospheric gases, sunlight and biological organism
20. - a geological formation in which all strata are inclined in the same direction.

1. - form when tectonics plates beneath the Earth's surface diverge.
2. - a method of determining the age of rocks in each layer by identifying the relative order of previous events.
3. - it is formed when two or more of Earth's tectonic plates converge and the older, denser plate is pushed beneath the higher plate and deep into the mantle.
4. - a magma that cooled and hardened beneath the surface.
5. - located between Mars and Jupiter. Grained sized up to hundreds of kilometers in diameter.
9. - small body of rock, iron, ice, methane, ammonia, carbon dioxide that orbit the sun elliptically.
10. - process in which sediments compact under pressure, expel connate fluids and gradually become solid rock.
11. -the transformation of existing rock to rock with different mineral composition or texture.
14. - landform shaped like a triangle, created by the deposition of sediments that is carried by a river and enters slower moving or stagnant water
16. - a mixture of molten and semi-molten rock found beneath the surface of the Earth.
17. - process where rocks are broken down by natural forces such as wind or water.
18. - naturally occurring and coherent aggregate of one or more minerals.