Geologic Time Scale

Which layer is the youngest?

What is absolute aging?

Which layer is the older than armored fish?

Which layer is the oldest?

Was this area of the earth ever under water?

Which layer is OLDER than layer B?

In what period do we find the first mammals?

Is this a characteristic of an index fossil? Being difficult to identify

How do we know what has happened in the past?

If you find thousands of shells and other water fossils buried deep in the ground, what can you assume about the area?

Which layer is the youngest?

Is this a characteristic of an index fossil? NOT being widespread (found only in one area)

What is relative aging?

Which type of dating gives you an APPROXIMATE age?

In what era do we find the flowering plants?

Is this a characteristic of an index fossil? Living for a very short time (found in only one rock layer)

Which layer is OLDER than layer A?

What can we infer about this locations past using the rock layers?

In what era do we find the first birds?

In what era do we find the first mammals?

In what period do we find the first birds?

Which type of dating gives you an SPECIFIC age?

Which is an example of absolute dating?

In what period do we find the flowering plants?

When did this area switch from water to land?

Which layer is the older than dinosaurs?

Is this a characteristic of an index fossil? Being unique and easy to identify

Is this a characteristic of an index fossil? Being widespread (found across the world)

Which is an example of relative dating?

Is this a characteristic of an index fossil? Living for a very long time (found in multiple rock layers)