Across
- 3. A scale that measures the hardness of a mineral.
- 4. A naturally occurring material that is made up of one or more minerals
- 6. A physical property of a mineral that is not very reliable for identifying it because many minerals exist in more than one _____.
- 9. A type of rock formed from intense heat and pressure inside the Earth
- 10. Igneous rock that forms from magma inside Earth
- 11. A type of rock that forms from compacted and cemented layers of sediment
- 13. Squeezing layers of sediment together because of pressure
- 15. Pieces of rock, shells, and small grains of minerals that are deposited in a new place
- 16. The mass of a sample of substance divided by its volume
- 17. Melted rock below Earth's surface
Down
- 1. Igneous rock that forms from lava on Earth's surface
- 2. The way a mineral reflects light
- 5. A process that causes particles of sediment to be stuck toether
- 7. A series of changes that rock continually undergoes
- 8. A material that gives off energy when burned. These formed millions of years ago from the remains of dead organisms.
- 12. Rock that forms when molten rock cools and hardens
- 13. Each mineral has __________ of a particular shape that can be used to identify the mineral.
- 14. A solid that occurs naturally and has a definite chemical composition and structure