Topic Review Study Sheet: Changes in Life Forms

What is the term for the impression of an organism, or its remains, that have been converted into rock? Most of these are found in sedimentary rock?

• Fossil

• Crystal

• Magma

• Amber

What is the process called in which an organism becomes a fossil, taking millions of years?

• Fossilization

• Photosynthesis

• Respiration

• Metamorphosis

What do we call all the fossils that have been discovered and what we've learned from them, documenting the diversity and changes in life forms throughout Earth's history?

• Fossil Record

• Geological Timeline

• Carbon Dating

• Sedimentary Layers

Who is a scientist that studies fossils to learn about what past organisms were like?

• Paleontologist

• Botanist

• Astronomer

• Chemist

What are layers of rock, with newer layers on top of older ones, called?

• Rock Strata

• Magma Chambers

• Fault Lines

• Crystal Lattices

What is the principle called that states the age of a rock or fossil can be determined by its depth; the deeper it is, the older it is?

• Superposition

• Uniformitarianism

• Cross-cutting Relationships

• Catastrophism

What is the method called that paleontologists use to approximate the age of a fossil based on the rock layer it is found in?

• Relative Dating

• Carbon Dating

• Radiometric Dating

• Molecular Clocks

What is the method called that is used to determine the exact age of a fossil using its chemical and physical properties, with radiocarbon dating as a common method?

• Absolute Dating

• Relative Dating

• Fossilization

• Stratification

What is the name of the system that organizes Earth's history into eons, eras, periods, and epochs?

• Geological Time Scale

• Continental Drift Theory

• Plate Tectonics System

• Rock Cycle

What are fossils created from the remains of dead organisms, such as bones or shells, called?

• Body Fossils

• Trace Fossils

• Mold Fossils

• Cast Fossils