Name: ________________________

Study Sheet – Exam 2 - Geology 2 – Chapters 2, 3, 4

What physical property denotes the color of a powdered mineral?

The largest intrusive igneous bodies are __________.

The Columbia Plateau in the northwestern United States was produced

by numerous fissure eruptions of very fluid basaltic lava.

Which one of the following sets of two terms describes how a mineral

responds to mechanical impact?

All minerals have a crystal form.

All silicate minerals contain which of the following two elements?

The silicon-oxygen tetrahedron is a complex ion.

The ratio of silicon atoms to oxygen atoms is the same in each of the

various silicate structures.

Which of the minerals illustrated in the following photograph exhibits

cubic cleavage?

Which one of the following is NOT a silicate mineral?

All ferromagnesian minerals contain one or both of these elements:

Most rocks are aggregates of minerals.

The most common group of rock-forming minerals is the __________.

Igneous rocks that form when lava solidifies are classified as extrusive

or volcanic igneous rocks.

Igneous rocks are classified based on their texture and mineral

composition.

Which one of the following greatly affects both the size and

arrangement of mineral crystals in an igneous rock?

Rocks that contain voids left by gases that escape as lava solidifies are

said to exhibit a(n) __________ texture.

Basalt makes up the ocean crust as well as lava flows and volcanic

structures on land.

Igneous rock originates when hot, molten material called __________

cools and crystallizes.

A volcano that takes the shape of a broad, domed structure is called a

__________ volcano.

Magmas that produce __________ rock contain about 50 percent silica

and tend to be quite __________.

Which one of the following is NOT a primary factor of magma that

directly determines the nature of a volcanic eruption?

What type of volcano produces the most violent eruptions?

This type of magma, with a silica content of about 70 percent, has the

greatest tendency to form pyroclastics.

What type of volcano is composed of interbedded lavas and pyroclastic

deposits?

What type of volcano is typically the smallest?

What type of volcano has the steepest slopes?

Exemplified by the Hawaiian Islands, this type of volcano tends to be

the largest on Earth.

Intrusive igneous bodies are classified according to their shape and

orientation with respect to the host rock.

Igneous rocks are classified based on their texture and mineral

composition.

Which one of the following is NOT a possible product of a volcanic

eruption?

Which of these rocks is composed almost entirely of ferromagnesian

minerals?

Which one of the following is NOT included in the definition of a mineral?