Geo History 1

What might you conclude if a fish fossil was found on top of a mountain in Kentucky?

• An Earthquake happened there.
• A Volcano erupted there.
• A forest covered that area for a while.
• A Sea once covered the area.

Relative dating of rock layers tells us that the deeper we dig, _______.

• the younger the rocks get
• the smellier the rocks get
• the harder the rocks get
• the older the rocks get

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

How old do Paleontologists believe the Earth is?

• 2015 years old
• 3.6 billion years old
• 4.6 billion years old
• 4.6 million years old

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

• F
• E
• B
• A

The ______________ era covers almost 90% of earth's history.

• Paleozoic 
• Mesozoic 
• Cenozoic
• Precambrian 

Trilobites are found in the _____________.

• Cenozoic
• Mesozoic
• Paleozoic
• Cretaceous

When an igneous intrusion is found in a layer, what do we know about its age?

• The intrusion is younger than the rock.
• The intrusion is older than the rock
• The intrusion is the same age as the rock.
• The intrusion was made by ailens.

Which statement best describes uniformitarianism?

• Older rocks lie at the bottom of younger rocks.
• The processes that act to change Earth's surface today are the same processes that acted upon Earth's surface in the past.
• The continents were once joined in a large land mass.
• Layers of sedimentary rock contain

Evidence indicates that 251 million years ago a mass extinction of many life-forms occurred on Earth. Which form of life became extinct at this time?

• Trilobites
• Dinosaurs
• Mammoths
• Eurypterids