Geologic TIme Scale

_______________ is the long span of time that begins geologic time.

• Precambrian Time
• Cenozoic Time

A unit of geologic time that subdivides eras

• period
• time span

What is the name of the most recent era in geologic time?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

How long ago did dinosaurs roam Earth's surface?

• 65 million years ago

• 180 million years ago

• 345 million years ago

• 405 million years ago

During which period did conifers such as pine trees first appear?

• Triassic

• Jurassic

• Cretaceous

• Tertiary

Which era lasted the longest?

• Cenozoic

• Mesozoic

• Paleozoic

• Precambrian

Which era did fungi first appear?

• Cenozoic

• Mesozoic

• Paleozoic

• Precambrian

The Earth is _____________________ years old.

• 4.6 million

• 4.6 billion

• 4.6 trillion

• 4.6 zillion

What is the largest/major unit of geologic time?

• Epoch

• Period

• Era

The Mesozoic Era is found in which Eon?

• Phanerozoic

• Precambrian