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________ occur at about the time of the first quarter and third quarter phases of the Moon.

Continental crust is generally thicker than oceanic crust.

________ has the same mineral composition as andesite.

________ is thought to form by partial melting and in situ crystallization of the melted portion.

Detrital sedimentary rocks are classified according to clastic particle size; chemical sedimentary rocks are named according to the most abundant minerals.

Repeated eruptions of relatively fluid lava from fissures can eventually cause an area to be covered by flood basalts.

In general, cinder cones are much larger than shield volcanoes.

Longshore sand transport and longshore currents depend on waves impinging ________ to a shoreline.

Approximately how much more energy is released in a 6.5 Moment Magnitude earthquake than in one with Mw of 5.5?

The mantle is composed mainly of metallic iron with small amounts of magnesium silicate minerals.