8ES: Chapter 4 - Rocks

Which rock type forms from cooling lava on Earth's surface?

• extrusive igneous
• intrusive igneous
• granite
• limestone

Which process  squeezes fluids from individual grains?

• cementation
• compaction
• erosion
• transportation

Basalt is an example of a(n)

• extrusive igneous rock
• intrusive igneous rock
• metamorphic rock
• sedimentary rock

What can be determined by studying the shape of clastic grains?

• distance they have been transported
• how they were eroded
• mineral content of the parent rock
•  what the parent rock was

What property indicates that this is a biochemical rock?

• foliated layers
• fossilized shells
• large rounded clasts
• minerals of different colors

What is true about volcanic glass?

• It contains no crystals.
• It cools slowly.
• It fractures easily.
• It is both intrusive and extrusive.

Which characteristics are used to classify a sedimentary rock such as sandstone?

• glass content and texture
• grain size
• luster and hardness
• texture and mineral composition

How do metamorphic rocks form?

• compaction and cementation
• cooling and crystallization
• extreme temperature and pressure
• weathering and erosion

Which igneous rock cooled slowly?

• basalt
• granite
• obsidian
• rhyolite

What is the general term for a rock fragment present in a sedimentary rock?

• clast
• glass
• mineral
• pore