Unit 3- Rocks & Minerals Test Review

Front

What mineral is used to make white paint?

Back

Rutile

Front

What type of crystal texture does a coarse-grained rock have?

Back

Coarse-grained crystals are large and easily visible.

Front

Which mineral is commonly used as pencil lead?

Back

Graphite

Front

Identify the igneous rock layer among sedimentary layers labeled A, B, C, and D.

Back

C is the igneous rock layer.

Front

What does the fracture or cleavage of a mineral indicate?

Back

It indicates the breakage pattern of the mineral.

Front

Define 'mineral'.

Back

A naturally occurring inorganic solid with a definite chemical composition and crystalline structure.

Front

What is the difference between igneous and sedimentary rocks?

Back

Igneous rocks form from cooled magma or lava, while sedimentary rocks form from the accumulation of sediment.

Front

What is the Mohs scale?

Back

A scale that ranks minerals based on their hardness from 1 (talc) to 10 (diamond).

Front

What is the significance of a mineral's luster?

Back

Luster describes how a mineral reflects light, which can be metallic, glassy, or dull.

Front

What is a rock cycle?

Back

The continuous process of rock formation and transformation through igneous, sedimentary, and metamorphic stages.