Most energy for human consumption in the industrial world comes from ________.

If an igneous dike cuts across a sequence of sedimentary beds, ________.

Basaltic clasts within the basal layers of a conglomerate imply which of the following statements?

A volcanic eruption that is emitted from the sides of a volcano is termed a(n) ________ eruption.

Within the world’s sedimentary rocks, fossils ________.

During an earthquake, if a footwall slides upward relative to a hanging wall (as shown in the figure below), the fault is termed a ________ fault.

During an earthquake, if a footwall slides upward relative to a hanging wall (as shown in the figure below), the fault is termed a ________ fault.

In 1900, the most commonly used source of energy in the United States was ________; today it is ________.

Ash, cinders, and blocks are all types of ________.

A primary force opposing motion on all faults is ________.