Exam 22: Minerals, rocks, and Volcanoes

Rocks solidified from molten material below ground are classified as ______________ igneous rocks.

Which igneous rock has dark color (low silica content)and small grains (fine texture)?

Regional metamorphism causes a parallel arrangement of mineral grains that results in a pronounced layering of the rock.The layering is known as ______________.

James Hutton formulated the concept of

Molten rock material on Earth's surface is called

Orthoclase and plagioclase are the two major types of ______________.

Plutons are

A mineral that has a vitreous luster looks

Magma viscosity depends on the silica content and the ______________ of the magma.

Underground molten rock material is known as ______________.

The color of the powder of a mineral is known as the mineral's

The term hardness refers to the ability of a mineral to

Metamorphism occurs for which class of rocks?

Marble and gneiss are classified as ______________ rocks.

Rocks are classified into three types on the basis of their

Gas,______________,and pyroclastics are the three general products emitted during a volcanic eruption.

The fundamental unit of the silicon-oxygen minerals is in the shape of a

Rocks solidified from molten material,either below or above ground,are classified as ______________ rocks.

The scientist ______________ is generally regarded as "the father of geology."

Silicates are minerals that have the oxygen and silicon ______________ as their basic structure.