Geologic Time Scale

Approximately how old is the Earth?

• 4.6 b.y.

• 4.6 m. y.

• 2.4 b. y.

• 2.4 m. y.

Tags

NGSS.HS-ESS1-6

If the same index fossils are found in different rock strata miles apart, what is probably true about the rock layers?

• Rock layers are pretty.

• The rocks are different age.

• Fossils

• The rocks are probably the same age.

Tags

NGSS.MS-ESS1-4

Name  characteristics of index fossils.

• Easily recognizable

• Wide geographic distribution

• Live a short time

• All of these

Use the diagram to answer. Which rock layer is the newest?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-4

Use the diagram to answer. Which rock layer has a fossil that is older than the fish fossil?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-4

In what time period did Pangaea, the super-continent, appear?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-ESS2-3

Dinosaurs, small mammals, and birds are found in this time period

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

What does "absolute age" tell about a rock layer or fossil?

• the exact age of a fossil determined by radiometric dating

• the approximate age of a fossil by using the layers above or below it

• the exact age of a fossil determined by relative age

• none of these

Select all of the characteristics of index fossils:

• easily recognizable

• abundant

• wide geographic distribution

• live a long time

Approximately how old is Earth?

• 1 million years

• 4.6 billion years

• 4.6 million years

• 4 thousand years

Tags

NGSS.MS-ESS1-4