Rocks II
Choose the correct answer for each question.
 

1 Rock formed from magma that cools deep below the surface of the earth is
sedimentary
extrusive igneous
lava
intrusive igneous
metamorphic

2 ________________ is a sedimentary rock composed of calcite, formed when calcium carbonate is chemically precipitated or accumulated as the result of organic activity on the sea floor.
marble
granite
limestone
schist
shale

3 Sedimentary rocks that have formed from fragments of pre-existing rocks, cemented together by pressure or chemical action, are classified as ___________ rocks.
clastic sedimentary
metamorphosed sedimentary
conglomerate
chemical sedimentary
foliated sedimentary

4 A dark, fine-textured volcanic rock, with a composition high in iron and magnesium, and low in silica, would most likely be
gabbro
shale
granite
marble
basalt

5 __________ is a coarse-textured intrusive igneous rock, high in silica content (the minerals are mostly quartz and feldspars).
gabbro
basalt
rhyolite
marble
granite

6 Metamorphic rock in which the minerals are lined up parallel to each other in layers is referred to as
foliated
clastic
lithified
magmatic
nonfoliated

7 A coarse-textured, clastic sedimentary rock formed from rounded fragments of gravel cemented together would be called __________.
sandstone
conglomerate
shale
breccia
granite

8 A rock such as rock salt, which has been formed by the precipitation of minerals from solution, is a/an ________ rock.
nonfoliated metamorphic
chemical sedimentary
intrusive igneous
clastic sedimentary
plutonic

9 Shale is a fine-textured sedimentary rock formed principally from particles of
sand
clay
calcite
quartz
organic carbon

10 A coarse-grained, foliated metamorphic rock in which the light and dark minerals have separated into parallel layers or bands is ______.
marble
granite
slate
schist
gneiss

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