Lesson 2 - Building a Time Line

What are the names of ALL parts of the geologic time scale in correct order from broadest to narrowest?

• era, period, eon

• eon, era, period, epoch

• era, eon, epoch, period

• eon, era, epoch, period

Tags

NGSS.MS-ESS1-4

The dinosaurs and reptiles were dominant in which Era?

• Precambrian

• Mesozoic

• Paleozoic

• Cenozoic

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Mammals are a dominant group in which era?

• Cenozoic

• Mesozoic

• Paleozoic

• Cambrianozoic

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

The Geologic Time Scale is a record of what?

• old geologists
• sweet geology music
• the known history of rocks and fossils
• a list of every living thing ever

Tags

NGSS.MS-ESS1-4

Index fossils are the remains of species that existed on Earth for relatively short periods of time.

• True

• False

Tags

NGSS.MS-LS4-1

What classification of unconformity occurs when sedimentary rock overlies igneous rock?

• disconformity

• nonconformity

• angular unconformity

• conformity

When part of the rock record is destroyed, the erosional gap that forms is a(n) ____.

• inclusion

• key bed

• unconformity

• superposition

Tags

NGSS.MS-ESS1-4

What is one reason the presence of iridium leads scientists to hypothesize that a meteorite impact caused the mass extinction of dinosaurs?

• There are no fossils of dinosaurs in rocks below the iridium layer.

• Iridium is only common on Earth and is never found in meteorites.

• All dinosaur fossils contain iridium.

• There are no fossils of dinosaurs in rocks above the iridium layer.

How is the relationship between eons and eras different than the relationship between hours and minutes?

• Eras are made up of eons, but hours are made up of minutes.

• Eons are made up of eras, but minutes are made up of hours.

• Eras are not even divisions of time, while minutes are.

• Eons are even divisions of time, while hours are not.

Tags

NGSS.MS-ESS1-4

A geologist who needed to correlate two rock formations in different areas could match exposed rock layers or fossils.

• True

• False

Tags

NGSS.MS-ESS2-3