Ch 8 Practice Test Minerals

Which of the following is not a part of the definition of a mineral?

• man-made
• definite chemical composition
• inorganic
• solid

Sedimentary rocks are ________________.

• formed because of temperature and pressure
• a type of foliated igneous rock
• formed from magma
• formed when loose materials become pressed or cemented together

The individual bits of minerals, smaller rock fragments, organic matter, and glass that make up a rock are called _____________.

• earth
• grains
• crystals
• sub-rock

The crystals that formed in slowly cooled magma produce _______________ mineral grains.

• tiny
• large
• fine-grained
• invisible

Calcite will scratch gypsum. This is an example of the physical characteristics called _______________.

• cleavage
• streak
• fracture
• hardness

When magma cools deep inside Earth, _____________ igneous rocks are formed.

• extrusive
• fine-grained
• intrusive
• detrital

Foliated rocks are distinguished by _____________.

• air holes
• layers
• lack of layers
• large mineral grains

Igneous rocks form from ________ when it cools.

• lava
• magma
• neither a nor b
• both a and b

When lava cools at Earth's surface, ___________ igneous rocks are formed.

• extrusive
• metamorphic
• coarse-grained
• intrusive

All of the following conditions in Earth can cause metamorphic rocks to form EXCEPT ______________.

• exposure to air
• heat
• the presence of hot, watery fluids
• pressure