Fossils and Index Fossils

Which type of rock is most likely to contain fossils?

• Igneous

• Sedimentary

• Metamorphic

• Volcanic

Tags

NGSS.MS-LS4-1

What is the principle that states that in undisturbed layers of rock, the oldest rocks are at the bottom?

• Principle of Cross-Cutting Relationships

• Principle of Superposition

• Principle of Original Horizontality

• Principle of Faunal Succession

Which of the following is NOT a type of fossil?

• Cast

• Mold

• Crystal

• Trace

Tags

NGSS.MS-LS4-1

What is the name of the time period known as the "Age of Reptiles"?

• Paleozoic

• Mesozoic

• Cenozoic

• Precambrian

Which process turns sediments into sedimentary rock?

• Melting

• Lithification

• Weathering

• Erosion

Which fossil type provides evidence of the activities of ancient organisms, such as footprints or burrows?

• Body fossil

• Trace fossil

• Petrified fossil

• Carbon film

What is the half-life of a radioactive isotope?

• The time it takes for all of the isotope to decay

• The time it takes for half of the isotope to decay

• The time it takes for the isotope to form

• The time it takes for the isotope to double

Tags

NGSS.HS-PS1-8

Which of the following is used to determine the absolute age of rocks?

• Index fossils

• Radiometric dating

• Law of Superposition

• Cross-cutting relationships

Which period is known for the explosion of diverse life forms, often called the "Cambrian Explosion"?

• Jurassic

• Cambrian

• Devonian

• Silurian

What is an index fossil?

• A fossil found only in metamorphic rocks

• A fossil that is widespread, abundant, and existed for a short geologic time

• A fossil that is found only in one location

• A fossil that is found in volcanic rocks