Exam 22: Minerals Rocks and Volcanoes

The physical characteristic that is used to distinguish intrusive igneous rocks from extrusive igneous rocks is _____________.

Sediments that are composed of solid fragments derived from preexisting rocks are called ______________ sediments.

Which of the following rocks is not a sedimentary rock?

The two principal agents of metamorphism are heat and _____________.

Rocks are classified into three types on the basis of their

Molten rock material on Earth's surface is known as ______________.

Dripstone formations that form on cavern ceilings are called _____________.

Which of the following is not one of the major types of metamorphism?

An example of igneous rock is

The saying "The present is the key to the past" is a simple way to state the basic geologic concept of ______________.

The Mohs scale is based on how many minerals?

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

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

The sedimentary rock known as ______________ consists of rounded pebbles cemented together by silica, calcium carbonate, or iron oxide.

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

The interrelationship among the processes that produce the three classes of rock is referred to as

A(n) ______________ is a cohesive aggregate of one or more minerals.

Which of the following is ranked 7 on the Mohs scale?

Volcanoes are so numerous along the margins of the Pacific Ocean that the region has been dubbed the ______________.

Molten rock material on Earth's surface is called