Geologic Time

Which answer choice shows the geologic eras in the correct order from earliest to the most recent?

• paleozoic, precambrian, cambrian, mesozoic, cenozoic
• Precambrian, cenozoic, paleozoic, mesozoic
• Precambrian, paleozoic, mesozoic, cenozoic
• Precambrian, mesozoic, cenozoic, paleozoic

Which era in geologic history are we currently in?

• Precambrian
• Cenozoic
• Paleozoic 
• Mesozoic

During this era, ferns and cycads were the dominant plants.  Dinosaurs and small reptiles dominated the Earth? 

• Precambrian
• Cenozoic
• Paleozoic
• Mesozoic

Which of the following best describes the process of relative dating?

• Determining the percentage of isotopes of radioactive elements in a fossil
• Using carbon dating to determine the age of rock layers
• Comparing the position of rock layers relative to one another to determine the order that they were laid down.

Which option below represents relative age?

• 300 million years old
• 451 million years old
• 300-400 million years old

What do rocks contain that act like natural clocks?

• sediments
• layers
• radioactive material
• varves

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

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

Paleozoic, Mesozoic & Cenozoic are all

• Epochs
• Eras
• Periods
• Eons

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

• Mesozoic 
• Paleozoic 
• Cenozoic 
• Precambrian