Chemical and Biochemical Sedimentary Rocks Quiz

What is the main difference between chemical and biochemical sedimentary rocks?

• Chemical rocks form inorganically, while biochemical rocks form through organic processes.

• Chemical rocks form through organic processes, while biochemical rocks form inorganically.

• Chemical rocks form through evaporation, while biochemical rocks form through precipitation.

• Chemical rocks form through precipitation, while biochemical rocks form through evaporation.

What is the dominant mineral in carbonate rocks?

• Quartz

• Calcite

• Feldspar

• Gypsum

Where do most limestone formations occur?

• In polar regions

• In mountainous regions

• In tropical regions with coral reefs

• In deserts

What is the main difference between tufa and travertine?

• Tufa forms at hot springs, while travertine forms at springs.

• Tufa is less porous than travertine.

• Tufa is more porous than travertine.

• Tufa forms at springs, while travertine forms at hot springs.

How can calcite and dolomite be distinguished from each other?

• By their crystal structure

• By their reaction to weak acid

• By their density

• By their color when weathered

What is the main characteristic of chert?

• It is made of quartz

• It is made of feldspar

• It is made of gypsum

• It is cryptocrystalline

What are banded iron formations (BIFs) composed of?

• Alternating layers of iron oxide minerals and chert

• Alternating layers of chert and limestone

• Alternating layers of quartz and dolomite

• Alternating layers of gypsum and calcite

What causes the formation of evaporites in arid regions?

• Low evaporation

• High evaporation

• Low salinity

• High precipitation

What is the main role of organisms in the formation of biochemical sedimentary rocks?

• They turn ions into sediment through evaporation

• They turn ions into sediment through precipitation

• They turn ions into sediment through organic processes

• They turn ions into sediment through inorganic processes

Tags

NGSS.MS-LS2-3

What is the main mineral in dolostone?

• Calcite

• Dolomite

• Gypsum

• Quartz