Geologic Time Line

_________ are unique layers in the rock record that help geologists correlate major events. These can be caused by major volcanic activity and meteorite impacts.

• Key beds

• Sedimentary

• Igneous

• Expose

Tags

NGSS.MS-ESS1-4

The earth is ______________of years old

• Hundreds

• Millions

• Billions

• Trillions

Tags

NGSS.MS-ESS1-4

What type of event usually marks the end of an Era

• A Mass Extinction

• A Quinceanera

• An earthquake

• A Volcanic Eruption

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Scientists chose where units of geologic time began and ended based on the appearance or disappearance of life.

• true

• false

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

The age of rocks and geologic features compared with other rocks and features nearby

• unconformity

• superposition

• absolute age

• relative age

Tags

NGSS.MS-ESS1-4

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers

• Near the bottom of the rock layers

• In the middle of the rock layers

• Somewhat near the surface

Tags

NGSS.MS-ESS1-4

What era came first?

• Palezoic

• Mesozoic

• Cenozoic

• Precambrian

Tags

NGSS.MS-ESS1-4

What is the approximate age of Earth?

• 4.6 thousand

• 4.6 million

• 4.6 billion

• 4.6 trillion

Tags

NGSS.MS-ESS1-4

In undisturbed rock layers, the layer that is on the bottom is older than the layers above it.

• Law of superposition

• Law of crosscutting

Tags

NGSS.MS-ESS1-4

You can identify any period of Earth's history by the ____ content of the rocks.

• sulfur

• sediment

• annual

• fossil

Tags

NGSS.MS-ESS1-4