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

Alfred Wegener speculated that the present continents were once part of a single supercontinent that he named __________ that broke apart about 200 million years ago allowing its sections to somehow drift into their present locations.

Correlation and the use of index fossils are used to determine ________________.

The foundation of the science of geology rest on James Hutton’s theory of _______________, which states the present is the key to the past and provides the basis for the rock cycle model, a series of events through which a rock changes over time.

Which of the following is not one of the types into which rocks are classified?

In the Bergeron process, condensation occurs on

Match the description with the type air mass it describes.

A solid, cohesive, natural aggregate of minerals is called a _______________.

For water droplets to form, what must be present?

How good or bad (in terms of pollution) the air is, is rated by a color-coded ________ Index.