Relative - Age Dating

Unit: Geologic Time

Relative-Age Dating

Objective:

I can analyze rock formations using the five principles of relative-age dating.

Open Ended

How do you think understanding the history of Earth helps us today?

Open Ended

Why do you think it is difficult to determine the age of our planet?

Multiple Select

What are some geologic processes happening today that you think most likely happened in the past, too?

• weathering

• erosion

• rocks melting and cooling

Do you think all of the layers in the picture formed at the same time? Why or why not?

What was the first ingredient added to the seven layer dip?

Multiple Choice

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

Create this map on a piece of paper

Multiple Choice

How does sedimentary rock usually form?

• Vertically
• Diagonally
• Folding
• Horizontally

Multiple Choice

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

Multiple Choice

According to the law of superposition, which layer is the youngest?

• A
• B
• C

Multiple Choice

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

Multiple Select

What geologic principle(or law) is best displayed here?

• Superposition

• Original horizontality

• Cross-cutting relationships

• Inclusions

Open Ended

Explain how the rock record provides relative ages.

We can ______________to determine relative ages.

Multiple Choice

Which layer is OLDER? Intrusion M or Layer D?

• Intrusion M

• Layer D

Multiple Choice

Which layer is OLDER? Fault E or Intrusion D?

• Fault E

• Intrusion D

Multiple Choice

Which layer is OLDER? Layer E or Intrusion A?

• Layer E

• Intrusion A

Multiple Choice

Which layer is OLDER? Layer E or Fault H?

• Layer E

• Fault H

Multiple Choice

Which layer is OLDER? Layer M or Intrusion P?

• Layer M

• Intrusion P