Rock and Mineral Review 5

Obsidian’s glassy texture indicates that it formed

• slowly, deep below Earth’s surface

• slowly, on Earth’s surface

• quickly, deep below Earth’s surface

• quickly, on Earth’s surface

Tags

NGSS.MS-PS1-4

Which mineral was tested?

• amphibole

• quartz

• galena

• graphite

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NGSS.MS-PS1-2

The diagram shows magnified views of three stages of mineral crystal formation as molten material gradually cools. Which rock normally forms when minerals crystallize in these stages?

• shale

• gneiss

• gabbro

• breccia

Which rock is only formed by regional metamorphism?

• slate

• hornfels

• dunite

• marble

The diagram below represents geological processes that act continuously on Earth to form different rock types. Which table correctly classifies each rock type?

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Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

In which set are the rock drawings labeled with their correct rock types?

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-1

Rocks are classified as igneous, sedimentary, or metamorphic based primarily on their

• texture

• crystal or grain size

• method of formation

• mineral composition

When granite melts and then solidifies, it becomes

• a sedimentary rock

• an igneous rock

• a metamorphic rock

• sediments

The diagram represents five rock samples. The basalt was most likely formed by

• heat and pressure

• melting and solidification

• compaction and cementation

• erosion and deposition

The photograph shows a sandstone erosional feature that formed near the Grand Canyon, in southwestern United States. What is the range of grain sizes that are most commonly found in rock making up this feature?

• 0.0004 cm – 0.006 cm

• 0.006 cm – 0.2 cm

• 0.2 cm – 6.4 cm

• 6.4 cm – 25.6 cm

Tags

NGSS.MS-ESS2-2