Sedimentary Rocks

How are sedimentary rocks classified?

• According to their size

• According to their color

• According to their shape

• According to their weight

What is the general way in which most sedimentary rocks form?

• From the cooling and solidification of magma or lava

• From the compaction and cementation of sediments

• From the metamorphism of existing rocks

• From the deposition of volcanic ash

What are sediments?

• Fragments of rock resulting from weathering

• Minerals formed through crystallization

• Particles of volcanic ash

• Organic matter from living organisms

How are sediments classified?

• According to their color

• According to their weight

• According to their size

• According to their shape

What is the smallest category of sediment size?

• Clay

• Silt

• Sand

• Pebbles

What is the largest category of sediment size?

• Clay

• Silt

• Sand

• Boulders

Which type of sedimentary rock is made of compacted sand grains?

• Conglomerate

• Breccia

• Sandstone

• Shale

Which type of sedimentary rock is formed from compacted plant remains?

• Coal

• Rock Salt

• Dolostone

• Coquina

What type of rocks commonly contain fossils?

• Igneous rocks

• Metamorphic rocks

• Sedimentary rocks

• Crystalline rocks

How do crystalline sedimentary rocks form?

• From the compaction and cementation of sediments

• From the cooling and solidification of magma or lava

• From evaporation or precipitation

• From the metamorphism of existing rocks