Rock Layer Quiz

The statement that the oldest layer will be at the bottom in an undisturbed sequence of rock layers is called the Principle of ....

• Inclusions
• Unconformities
• Cross-Cutting Relationships
• Superposition

The Law of Superposition states

• Younger rocks layers are on top of older rock layers

• Older rock layers are on top of younger rock layers

A break in the Earth's crust 

• fault 
• mountain
• plate
• fossil 

Fossilized tracks or other evidence of activity of an organism.

• trail 
• trace 
• cast

True/False: Fossils are remains of ancient plants and animals.

• true

• false

Which fossil would look the most like the original ancient organism?

• Mold

• Preserved (preservation)

• Trace

Which item is an example of preserved (preservation) remains?

• dinosaur footprint

• a trilobite mold

• imprint of a fern

• an insect trapped in amber

a petrified fossil (mineral replacement) forms when

• an organism is frozen

• minerals replace all or part of an organism

• a hollow impression is left inside the sediment

• an organism becomes trapped in amber

Look at the picture. Which fossil is most likely older?

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Look at the picture. Which fossil is most likely younger?

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