Sedimentary Rocks and Processes

What are the three main processes that form sedimentary rocks?

• Melting, cooling, and crystallization

• Deposition, cementation, and compaction

• Heat, pressure, and chemical change

• Erosion, transportation, and metamorphism

What force causes minerals and organic particles to settle at the bottom of a liquid during sedimentation?

• Wind

• Water currents

• Gravity

• Chemical reactions

Why are fossils commonly found in sedimentary rocks?

• Fossils are formed from molten rock.

• Organisms are deposited and covered by layers of sediment.

• Fossils are created by intense heat and pressure.

• Sedimentary rocks are always found near volcanoes.

How can sedimentary rocks often be identified?

• By their shiny, crystalline structure

• By their layered appearance

• By their volcanic origin

• By their magnetic properties