Eons and Earth's History Quiz

What is an eon?

• A short period of time

• A type of dinosaur

• A large block of time that lasts about a billion years

• A type of fossil

What is the first eon called?

• The Jurassic

• The Really Hot Time

• The Hadean

• The Archean

What happened during the Archean eon?

• Dinosaurs first appeared

• Earth was a boiling stew of lava and steam

• Earth’s surface cooled, and the first life forms appeared

• I fell asleep

During which eon did Earth's atmosphere fill with oxygen?

• Hadean

• Proterozoic

• Archean

• Paleozoic

What is the Cambrian period known for?

• The extinction of dinosaurs

• The formation of Pangaea

• A time when many new life forms evolved

• Flying Banana

What does the term 'Cambrian Explosion' refer to?

• A volcano eruption

• A time when Earth’s land masses joined

• The sudden appearance of many new life forms

• A meteor hitting Earth

What era followed the Paleozoic era?

• Mesozoic

• Archean

• Monday

• Cambrian

What is the Mesozoic era often called?

• The Age of Oceans

• The Age of Mammals

• The Age of Dinosaurs

• The Age of Birds

What happened about 65 million years ago during the Mesozoic era?

• Dinosaurs first appeared

• Pangaea formed

• Dinosaurs became extinct

• The first fish evolved

Which life forms were most complex during the Paleozoic era?

• Bacteria

• Trilobites

• Dinosaurs

• Mammals