EarthSCi_L6.10 Assessment

The age of the Earth is estimated to be ___________.

• A. 4.5 billion years

• B. 1 million years

• C. 7000 years

• D. 10,000 years

What is the term used to describe the preserved remains or traces of ancient organisms found in the Earth's crust?

• A. Minerals

• B. Artifacts

• C. Fossils

• D. Petrified objects

The longest part of Earth's history, extending from the formation of the Earth to the beginning of the Paleozoic Era is called _______.

• Cenozoic Era

• Precambrian Time

• Mesozoic Era

• Paleozoic Era

The era known for the Cambrian Explosion is the _______.

• Cenozoic Era

• Precambrian Time

• Mesozoic Era

• Paleozoic Era

The Earth's early atmosphere was mainly composed of which gas?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Methane

Which of the following is an example of an absolute dating method?

• A. Law of Superposition

• B. Index Fossils

• C. Radiocarbon dating

• D. Fossilization

What is the name given to the time period associated with a mass extinction event, including the disappearance of dinosaurs?

• A. Cambrian Explosion

• B. Permian Extinction

• C. Cretaceous Extinction

• D. Ordovician Extinction

The principle of cross-cutting relationships states that _____________________.

• A. Sediments are deposited in horizontal layers

• B. Intrusions or faults are younger than the rock they cut across

• C. Fossils found in rock layers are the same age

• D. Index fossils can help correlate rock layers

Which dating method relies on the steady decay of radioactive isotopes?

• Stratigraphic dating

• Dendrochronology

• Radiometric dating

• Correlation

Which geologic era is known as the "Age of Mammals"?

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

• Precambrian