Geologic Time Periods Overview

Geologic Time Periods Overview

Multiple Choice

what's bigger an eon or an era

• eon

• era

• none of the above

Multiple Select

the three eras in the Phanerozoic are

• Paleozoic

• Cenozoic

• Mesozoic

• Proterozoic

Multiple Choice

List the time periods largest to smallest

• eras, eons, periods, epoch

• epoch, eras, eons, periods

• eons, eras, periods, epochs

• epochs, periods, eras, eons

Multiple Choice

the geologic time line spans how many years

• 4.56 billion years

• 400 million years ago

• 3 million years ago

• 2000 years ago

Multiple Choice

the first fishes come out in this era

• cenozoic

• mesozoic

• paleozoic

• pre-cambrian

Multiple Choice

this time period saw the reptiles, scale trees, and seed ferns

• Silurian

• Devonian

• Carboniferous

• Permian

Multiple Choice

in the jurassic period you have

• primates and flowering plants

• first vascular plants

• first birds

• first mammals and dinosaurs

Multiple Choice

there have been ___ mass extinctions in history

• 3

• 4

• 5

• 2

Multiple Choice

The asteroid theory is backed up by a layer of this in the fossil record

• clay

• iridium

• indigo

• no fossils at all