The Geological Time Scale

What observations can you make about these layers of rock?

• The layers indicate different periods of sediment deposition.

• The layers are all the same age.

• The layers are made of the same material.

• The layers are not related to each other.

Scientists are able to measure the age of the Earth and its features using:

• carbon dating

• radiometric dating

• fossil analysis

• dendrochronology

Which period is known as the 'Age of Reptiles'?

• Jurassic Period

• Cambrian Period

• Quaternary Period

• Devonian Period

What is the current geological epoch?

• Holocene

• Pleistocene

• Miocene

• Eocene

What is the geologic time scale (GTS)?

• A) A system of chronological dating that relates geological strata to time.

• B) A method to measure the age of rocks.

• C) A tool used by astronomers to study stars.

• D) A calendar for historical events.

What is the current epoch in the Cenozoic era?

• Holocene

• Pleistocene

• Pliocene

• Miocene

During which period did the Jurassic epoch occur?

• Triassic

• Cretaceous

• Permian

• Jurassic

Which era is known for the Cambrian period?

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

• Precambrian Era

What is the earliest eon listed in the geological timetable?

• Hadean

• Archean

• Proterozoic

• Phanerozoic

Which of the following periods is part of the Mesozoic era?

• Cambrian

• Jurassic

• Devonian

• Silurian