Geologic Time Scale

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 fossil is older than the fish fossil?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

In which time period are we currently living in?

• Precambrian Era

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Tags

NGSS.MS-ESS1-4

Jellyfish are one of the oldest species on Earth.  In what time period did they first appear?

• Precambrian Era

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Tags

NGSS.MS-LS4-1

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

• The "exact age of a fossil determined by radiometric dating or the half life of radioactive elements.

• Easily recognizable

• Live a short time

• The age of one rock layer or fossil compared to another. (example: one is older or younger than the other)

Tags

NGSS.MS-ESS1-4

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

• Abundant

• The exact age of a fossil determined by radiometric dating or the half life of radioactive elements.

• The age of one rock layer or fossil compared to another.

• Wide geographic distribution

Name  characteristics of index fossils.

• Easily recognizable

• Wide geographic distribution

• Live a short time

• All of these

What evidence do scientists use to determine the age of the earth?

• Absolute and relative dating of rocks and fossils, and the fossil record.

• 4.6 billion years old

• relative age

• The rocks are probably the same age.

Tags

NGSS.MS-ESS1-4

Approximately how old is the Earth?

• 4.6 b.y.

• 4.6 m. y.

• 2.4 b. y.

• 2.4 m. y.

Tags

NGSS.MS-ESS1-4

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