Geologic Time Scale

During the Proterozoic, between 2, 500 billion years and 541 million years ago, the development of multicellular organisms with nuclei developed. These organisms eventually led to the development of the plants, spiders, fungi, and protists, and are called

• worms

• trilobites

• eukaryotes

• cyanobacteria

The first life forms on planet Earth occur during the Archean between 4,000 and 2,500 billion years ago, and are called

• eukaryotes

• trilobites

• protists

• prokaryotes

Based on the Geologic Time Scale, how old is the Earth?

• 4.6 billion years

• 541 million years ago

• 251.9 million years ago

• 0.01million years ago

What is the largest division in the Geologic Time Scale?

• Period

• Era

• Eon

• Epoch

Which is the correct hierarchy of divisions in the geologic time scale from the largest to the smallest?

• epoch – period – era – eon

• period – era – epoch – eon

• eon – epoch – era - period

• eon – era – period – epoch

What is known as the Age of Dinosaurs or Reptiles?

• Mesozoic Era

• Paleozoic Era

• Precambrian

• Cenozoic Era

Which does NOT belong in the group?

• Sharks

• Crocodiles

• Turtles

• Frogs

What epoch do we live in?

• Pleistocene Epoch

• Quaternary Period

• Holocene Epoch

• Cenozoic Era

In what period did the primates first appear?

• Neogene period

• Cretaceous period

• Paleogene period

• Early Tertiary period

When did Pangaea begin to break? Using the Geologic Time Scale above, it was about…

• 251.9 mya

• 248 mya

• 4.6 mya

• 201 mya