Geologic Timescale quiz 4.4 17-18

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

Paleozoic, Mesozoic & Cenozoic are all

• Epochs
• Eras
• Periods
• Eons

Scientists chose where units of geologic time began and ended based on major changes in life forms at certain times.

• true
• false

Which organism first appeared in the Mesozoic?

• Trilobites
• Dinosaurs
• Cyanobacteria
• Humans

Which era are we in now?

• Precambrian
• Mesozoic
• Paleozoic
• Cenozoic

Which era is the longest?

• Cenozoic
• Cambrian
• Precambrian
• Phanerozoic

During which era did photosynthetic organisms begin to make oxygen?

• Pre-Cambrian Time
• Paleozoic Era
• Mesozoic Era
• Cenozoic Era

The idea states the same processes that occurred in the past operate in the same way as they do in the present.

• Absolute Dating
• Relative Dating
• Catastrophism
• Uniformitarianism

Pangea broke up in the 

• Paleozoic
• Mesozoic
• Archean
• Cenozoic