The rate of decay of a population of radioactive parent atoms __________ over time.

Which of the following is an important characteristic of an index fossil?

What geologic material is used to make concrete?

The figure below shows a conveyor belt as an analogy for a glacier.  The letters, A, B, and C, respectively represent

On a geologic map, measurements called __________ (trend) and __________ (inclination) are used to describe the orientation or attitude of a rock layer or fault surface.

Basal sliding of a glacier occurs because of _______________.

In studying seismic data from Mars, you notice that no S waves were recorded from 130° through 180° on the opposite side of the planet from the seismic source.  What does this information tell you about the interior of Mars?

Why are sedimentary rocks typically deposited in a horizontal orientation?

A vehicle with a power-operated pronged platform that can be raised and lowered for insertion under a load to be lifted and moved is called a(n) ________.

Stack loose bricks no higher than _________ feet. Above ________ feet, begin stacking two inches (5 cm) in from the edge, continuing in this manner for each additional foot of height up to seven feet