Rocks and Minerals Pre-Assessment (Grade 8)
Dolomite can scratch a copper penny, but cannot be scratched by a steel nail.
Dolomite can scratch a copper penny, but cannot be scratched by a fingernail.
Dolomite can scratch window glass, but cannot be scratched by a steel nail.
Dolomite can scratch window glass, but cannot be scratched by a fingernail.
Dolomite cannot be scratched by any other material.
10.0 g/cm3
5.0 g/cm3
2.0 g/cm3
1.0 g/cm3
20.0 g/cm3
Crystal A
Crystal B
Crystal C
Crystal D
Plagioclase feldspar, potassium feldspar, and quartz
Plagioclase feldspar, pyroxene, and olivine
Amphibole, calcite, and hematite
Amphibole, biotite mica, and gypsum
Biotie, Olivine, and pyroxine
Rock 1
Rock 2
Rock 3
Rock 4
Texture
Mineral Composition
Crystal or Grain Size
Method of Formation
Density
The rock was formed by the metamorphism of sedimentary deposited in a terrestrial environment during the Cretaceous Period.
The rock was formed by the compaction and cementation of sediments deposited in a terrestrial environment during the Triassic Period.
The rock was formed from the solidification of magma in a marine environment during the Triassic Period.
The rock was formed by the metamorphism of sedimentary deposited in a terrestrial environment during the Triassic Period.
The rock was formed by the compaction and cementation of sediments deposited in a marine environment during the Cambrian Period.
Zone A
Zone B
Zone C
Zone D
In a delta from sand grain deposited, and cemented together by minerals
In Earth’s interior where temperatures exceeded the melting point of quartz
On Earth’s surface from the cooling of molten lava
In a desert when heat and metamorphic pressure caused quartz crystals to fuse together
Meteor impact from a large asteroid 65 million years ago.
Fracture
Hardness
Streak
Luster
Cleavage
Wait!
Here's an interesting quiz for you.