Geologic Time Review

What is the term for the time it takes for half of a radioactive element's atoms to decay?

• half-life

• unconformity

• radioactive dating

• Carbon-14

Tags

NGSS.HS-PS1-8

All time before the Cambrian explosion of life is called

• Pre Adolescent Time

• Pre Apocalyptic Time

• Pre Historic Time

• Pre Cambrian Time

The Paleozoic era was known as the age of  _________  . The Mesozoic era was known as the age of _________. The Cenozoic era was known as the age of  _________  .

• reptiles, fish, humans

• fish, retiles, humans

• fish, humans, reptiles

Tags

NGSS.MS-LS4-1

What geologic period had huge swamps and produced the fossil fuels we burn today?

• Silurian

• Carboniferous

• Permian

• Devonian

Tags

NGSS.MS-ESS3-1

NGSS.MS-LS4-1

What do geologists mostly study to develop the geologic time scale?

• Earth's rotation

• tectonic plate motion

• volcanoes and earthquakes

• rock layers and index fossils

Tags

NGSS.MS-ESS1-4

Which layer is the youngest layer?

• J

• Z

• D

• F

Tags

NGSS.MS-ESS1-4

What is a fossil that was widely distributed but existed for a geologically short period of time?

• sedimentary rock

• index fossils

• layers

• decay fossils

Tags

NGSS.MS-LS4-1

Human history makes up

• approximately half of Earth's history

• about 1/3 of Earth's history

• a very tiny fraction of Earth's history

• a large amount of Earth's history

What is the purpose of the geologic time scale?

• to organize and sequence events by eras and periods in the different divisions of time and to serve as a timeline

• to show the evolution of life forms and to model how those life forms behaved and what they ate

• to organize and sequence events in the history of Earth and to serve as a model for a vast amount of time covered

• to determine the relative ages of rocks and when and how they formed to create a timeline of their development

Tags

NGSS.MS-ESS1-4

A fault cutting through 2 lower layers of rock would be __________ than the layers around it.

• older

• younger

• the same

• harder

Tags

NGSS.MS-ESS1-4