Rockin' Review

Rocks are classified according to their...

• crystal structure and compounds
• mineral composition and texture
• texture and size
• composition and formation

Which type of rocks are formed through the cooling of magma and lava?

• metamorphic
• sedimentary
• igneous

What type of rock forms deep underground from intense heat and pressure.

• Foliated metamorphic rock
• Extrusive igneous rock
• Intrusive igneous rock
• Organic sedimentary rock

What are the three steps in the formation of sedimentary rock?

• melting, cooling, deposition
• deposition, compaction, cementation
• deposition, heat, and pressure
• compaction, cooling, and pressure

Using the following image, what type of rock will form on the surface as a result of this eruption?

• clastic
• foliated
• intrustive 
• extrusive

Metamorphic rocks are classified according to their texture.  Which of the following describes foliated texture?

• mineral grains have similar sizes
• mineral grains are in parallel bands
• mineral grains are arranged in random positions
• mineral grains have a range of different sizes

What type of rock usually forms at a delta?

• Intrusive
• Organic
• Clastic
• Nonfoliate

What is the the correct description of an intrusive igneous rock?

• Intrusive rocks have parallel bands and form inside a volcano
• Intrusive rocks form outside the earth and have small grains
• Intrusive rocks form outside the volcano and have large grains
• Intrusive rocks form inside a volcano and have large grains

Obsidian is classified as...

• Organic sedimentary

• Clastic sedimentary

• Intrustive igneous

• Extrusive igneous

Which of these is a sedimentary rock?

• Sandstone
• Marble
• Slate
• Granite