Igneous Rocks

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Basalt, a fine-grained dark rock, forms from lava that:

A.Cooled slowly deep underground

B.Cooled quickly at or near the surface

C.Was deposited by a river

D.Was metamorphosed under pressure

Granite, with its large interlocking crystals, is an example of a(n):

A.Extrusive (volcanic) rock

B.Intrusive (plutonic) igneous rock

C.Sedimentary rock

D.Metamorphic rock

Igneous rocks form from what?

A.Evaporated seawater only

B.Animal bones only

C.Cooling and solidification of magma or lava

D.Compacted plant fibers only

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