Fossils Check-In 4

Fossils are...

• The preserved remains of plants

• The preserved remains of any extinct organisms

• The preserved remains of any dead organisms

• The preserved remains of animals

Tags

NGSS.MS-LS4-1

This process slowly turns bone into rock over millions of years

• Carbonization

• Permineralization

• Amber

• True Form

To be a good index fossil, an index fossil needs

• to be extinct

• to have existed for a very long time, and be very rare

• to be older than every other fossil in that Geologic Column

• to have existed for a short time period, but be found in a lot of different places

The Geologic Column is a helpful tool for scientists because

• it is a naturally occurring timeline for fossils we find

• it has different kinds of rock

• it shows fossils appearing in a a random order

• it shows deeper layers having younger fossils and more shallow layers having older ones

Tags

NGSS.MS-ESS1-4

In the Geologic Column, deeper layers are...

• found at the top

• older than ones closer to the top

• the same age as layers near the top

• are younger than layers near the top

Tags

NGSS.MS-ESS1-4

Relative Dating is...

• Using rock layers to predict how old or recent a fossil is

• Finding the exact age of a rock layer

• Finding the exact age of a fossil

Tags

NGSS.MS-ESS1-4

Index fossils are used to...

• to find the exact age of fossils in layers above and below it

• predict the age of fossils in layers above and below it

• to come up with a precise age for rocks in the top layer

• to identify change over time

Tags

NGSS.MS-ESS1-4

Radiometric dating...

• allows you to guess the age of a fossil/rock

• finds the exact age of a fossil/rock

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS1-6

Why does it not make sense for fossils to show up in deep rock layers, disappear for several layers, and then show up again?

• There weren't any that died for million of years

• Organisms can come back multiple times through their existence

• One an organism goes extinct, it stays extinct!

• Fossils can get lost

Tags

NGSS.MS-LS4-1

Mass extinction occurs when...

• Matter is lost to volcanic eruptions

• LOTS of species go extinct at one time

• A couple species go extinct at the same time

Tags

NGSS.MS-LS4-1