Geologic Time SOL Review

Footprints, nests, and eggs are all examples of what kind of fossils?

• Mold fossil

• Cast fossil

• Trace fossil

• Original remains fossil

Which is the most recent era of time- the one that we are currently in?

• Mesozoic 
• Paleozoic 
• Cenozoic 
• Precambrian 

Scientists use radioactive decay to measure...

• relative time
• absolute time
• half-lives
• time of day

During which era/eon did the dinosaurs live and die?

• Paleozoic
• Pre-Cambrian
• Mesozoic
• Cenozoic

During which time span did life first evolve?

• Paleozoic

• Pre-Cambrian

• Mesozoic

• Cenozoic

What is the largest division of time?

• eon
• epoch
• era
• period

What type of event usually marks the end of an Era

• A Mass Extinction

• A Quinceanera

• An earthquake

• Evolution of a species

Cyanobacteria added this to the atmosphere

• carbon dioxide

• nitrogen

• carbon monoxide

• oxygen

How do most fossils form?

• Living things die and their remains are covered by sediment

• The hard parts of an organism dry out in the air

• The soft parts of an organism change to stone

• Freezing preserves the remains of an organism

What 2 things make a good index fossil?

• Good looks and a great smile
• widespread and on Earth of a short time
• widespread and on Earth for a long time
• only found in Bloomington and in every rock layer