Across
- 3. a colored mark left when a mineral is rubbed across a piece of unglazed porcelain
- 4. Hot melted rock that has reached the surface of Earth
- 8. A tool used to detect and measure radioactivity
- 10. Formed from any of the three types of rock when they are subjected to heat, preassure, or chemical changes
- 11. A substance that cannot be broken into simpler substances by chemical means
- 12. The mass of rock in which crystals are set
- 13. It is formed as magma cools and hardens on or below the surface of Earth
Down
- 1. The most common volcanic igneous rock
- 2. A mixture of two types of metals or a mixture of a metal and a nonmetal
- 5. Formed through the erosion, transportation, deposistion, and cemetation of pre-existing rocks
- 6. Form the geometric shape formed by a mineral that is determined by its atomic structure
- 7. the remains of any organism that once lived that ar usually chemically altered and preserved in some way
- 9. A tool that measures slight variations in Earth's gravitational field that may be used to locate metal ores