Adaptations U 1 L 1 Retest

Which Rock Strata is the oldest?

• B

• F

• G

• I

States that younger rocks lie above older rocks if the layers have not been disturbed

• Law of crosscutting
• Law of superposition
• Relative Dating
• Unconformity

How does absolute age differ from relative age?

• only absolute dating indicates which rock is older than another

• only absolute dating finds the age in years

• only relative dating finds the age in years

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

The Earth is _____________________ years old.

• 4.6 million

• 4.6 billion

• 4.6 trillion

• 4.6 zillion

Which period are we currently in?

• Quaternary
• Holocene
• Jurassic
• Tertiary

What are fossils that are abundant, easily recognizable, short lived, and widespread called?

• Preserved fossils

• Index fossils

• Imprints

• Radioactive dating

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

• The 'exact' age of a fossil determined by radiometric dating

• The relative age of a fossil determined by radiometric dating

• Younger rock layers sit on top of older rock layers

• Older rock layers sit on top of younger rock layers

a model scientists use to describe the timing of events and the relationships between those events in earth’s history.

• geologic time scale

• era

• period

• epoch

Analyze the seashell found in the white layer.  Which statement is true of the rock layer that contains this fossil?

• It could also contain a fossil from the bottom layer.
• It is older than the layers below it.
• It is younger than the layers above it.
• It is older than the layers above it.