Geologic Time

Which layer is the oldest?

• A
• B
• C
• D

Why is D younger than B?

• D had to be there for B to intrude
• D and B happened at the same time
• B was laid on top of D
• B had to be there for D to intrude

What is the law that states why F is younger than G?

• law of uniformitarianism
• law of superposition
• law of cross-cutting
• law of Memorial Jags

Does the picture represent relative or absolute dating?

• relative
• absolute

Absolute age is determined by...

• the other rocks around it
• the law of superposition
• radiometric dating

Absolute age...

• gives a number
• compares age (older/younger)

what is an example of Uniformitarianism?

• Volcanoes erupt the same now as in the past
• earthquakes happen the same now as they did in the past
• the earth's plates continue to move and shift
• all of these are true

The Geologic Time Scale is a record of what?

• old geologists
• sweet geology music
• the known history of rocks and fossils
• a list of every living thing ever

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers
• The age of fossils
• The relative age of rock layers
• the super powers of rocks

What type of rock do fossils form in?

• Igneous
• Sedimentary
• Metamorphic
• Classic