Rocks and Minerals Regents Review

Scratching a mineral against a glass plate is a method used for determining the mineral's

• color

• hardness

• luster

• cleavage

Which two processes formed this rock?

• compaction and cementation

• melting and solidification

• heating and application of pressure

• folding and faulting

Which mineral property is illustrated by the peeling of muscovite mica into thin, flat sheets?

• streak

• cleavage

• luster

• hardness

• A—cleavage; B—hardness; C—streak

• A—cleavage; B—streak; C—hardness

• A—streak; B—cleavage; C—hardness

• A—streak; B—hardness; C—cleavage

Which mineral shows no cleavage, has a hardness of 7, and a composition of SiO₂?

• Graphite

• Halite

• Garnet

• Quartz

Tags

NGSS.MS-PS1-1

Which mineral is the major component of drywall?

• selenite gypsum

• talc

• calcite

• muscovite mica

Tags

NGSS.MS-PS1-1

Which mineral is white or colorless, has a hardness of 2.5, and splits with cubic cleavage?

• pyrite

• halite

• calcite

• mica

The best evidence for determining the cooling rate of an igneous rock during its solidification is provided by

• faults in the rock

• composition

• density

• the crystal size of its minerals

The obsidian's glassy texture indicates that it formed from a magma that cooled

• slowly, deep below Earth's surface

• quickly, deep below Earth's surface

• quickly, on Earth's surface

• slowly, on Earth's surface

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which rock is of felsic composition, low in density, light in color, and coarse grained?

• gabbro

• granite

• rhyolite

• basalt