Classification of Rocks

If you examine a rock sample and observe (see) fossils in it, what type of rock does the sample represent?

• Igneous

• Metamorphic

• Sedimentary

• Fossils are found in several of the types listed above.

Tags

NGSS.MS-LS4-1

Which of the rock samples below is most likely to be a metamorphic rock?

• Sample A

• Sample B

• Sample C

• Sample D

Classify each sedimentary rock as either Clastic, Organic, or Chemical. 
Sandstone

• Clastic 

• Organic

• Chemical

Classify each sedimentary rock as either Clastic, Organic, or Chemical.
Limestone made from shells

• Clastic

• Organic

• Chemical

Classify each sedimentary rock as either Clastic, Organic, or Chemical. 
Conglomerate

• Clastic

• Organic

• Chemical

Classify each sedimentary rock as either Clastic, Organic, or Chemical. 
Shale

• Clastic

• Organic

• Chemical

Has large crystals because of slow cooling

• sedimentary rock

• metamorphic rock

• intrusive igneous rock

• extrusive igneous rock

Has wavy bands.

• sedimentary rock

• metamorphic rock

• extrusive igneous rock

• intrusive igneous rock

Tags

NGSS.MS-ESS1-4

Deposition & lithification or compacting & cementing produce

• sedimentary rocks

• igneous rocks

• metamorphic rocks

are sedimentary rocks the only classification of rock in which it is possible to find fossils? Choose TWO correct answers.

• Because sedimentary rocks stay on the surface where they form, and that is where the dead plants and animals are.

• Because sedimentary rocks form in water, and water is essential for all living things on Earth.

• Because metamorphic rocks form at temperatures between 100 C and 800 C, and the heat would destroy and deform the fossils.

• Because igneous rocks are formed from molten rock, and temperatures hot enough to melt rocks into minerals would burn the fossils.

Tags

NGSS.MS-LS4-1

NGSS.MS-ESS2-3