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A poleward-moving ocean current is ________.

The time between the first P-wave and S-wave arrivals is a measure of the distance from a receiving station to the epicenter of the earthquake.

Which one of the following is the one best measure of the wetness or dryness of a region?

________ dunes form where wind directions are variable.

Assume that you have just examined several flat-lying sedimentary layers. After much study you determine that there is a considerable span of time for which no sedimentary rock layer exists at this site. You have just discovered a(n) ________.

A feldspar-rich sandstone is called an arkose.

Currents within the surf zone that flow parallel to the shore are known as ________ currents.

________ is the name of the earthquake-magnitude scale based on the amount of total energy released during a large earthquake.

________ is(are) 20 times more effective than carbon dioxide at absorbing infrared radiation emitted by Earth.

The general term ________ denotes a buried, erosional surface where rock layers are missing.