RELATIVE AGE

4L*copy down things in black

Maya is older than AnnaNikki is older than Cheryl Cheryl is older than Maya

Who is the oldest?

Maya is older than Anna

Nikki is older than Cheryl

Cheryl is older than Maya

Who is the oldest?

youngest

oldest

Maya is older than Anna

Nikki is older than Cheryl

Cheryl is older than Maya

Who is the oldest?

432 1

HOW DO WE KNOW HOW OLD THE EARTH IS AND HOW LONG AGO THINGS HAPPENED ON EARTH?

WHAT IS RELATIVE DATING?Relative Age—how old something is compared to something else Example: I am older than John, but younger than Mary.

ROCK LAYERSWe can “read” rock layers to determine relative age of fossils and rocks

ROCK LAYERSWhich fossil is the oldest?Which fossil is the youngest?

A

B

C

D

ROCK LAYERSLaw of Superposition younger rocks are on top, older rocks are on bottom

A

B

C

D

SKETCH THIS!

SKETCH THIS!

oldest

youngest

WHAT IF IT’S NOT NEAT LAYERS?

WHAT IF IT’S NOT NEAT LAYERS?

WHAT IF IT’S NOT NEAT LAYERS?

TRY IT YOURSELF!

COMPARING ROCK LAYERS AND FOSSILS

B

C