Earth's History

What are the four eons that geologists use to break down Earth's existence?

• Hadean, Archean, Proterozoic, Phanerozoic

• Precambrian, Cambrian, Neoproterozoic, Phanerozoic

• Hadean, Archean, Proterozoic, Precambrian

• Precambrian, Cambrian, Neoproterozoic, Phanerozoic

What is the meaning of the term 'Hadean'?

• Underworld

• Formation

• Hostile

• Volcanism

What event is believed to have caused the formation of the Moon?

• A worldwide magma ocean

• The Great Oxidation Event

• The collision with Mars-sized protoplanet Theia

• The emergence of life

What is the oldest known fossil evidence of life on Earth?

• Stromatolites

• Trilobites

• Cyanobacteria

• Kimberella

What caused the mass extinction of obligate anaerobes during the Proterozoic?

• The Great Oxidation Event

• The formation of large continents

• The emergence of multicellular life

• The Cambrian explosion

What caused the rapid increase in atmospheric oxygen during the Proterozoic?

• Photosynthetic capabilities of cyanobacteria

• The formation of Banded Iron Formations

• The emergence of unicellular eukaryotes

• The assembly of supercontinents

What is the name of the first supercontinent that formed during the Proterozoic?

• Nuna

• Rodinia

• Pannotia

• Gondwana

What caused the break-up of the supercontinent Nuna?

• Convection currents in the mantle

• The Great Oxidation Event

• The emergence of multicellular life

• The Cambrian explosion

What event triggered a massive ice age during the Proterozoic?

• The formation of Banded Iron Formations

• The emergence of multicellular life

• The assembly of supercontinents

• The break-up of supercontinent Pannotia

What marked the end of the Precambrian?

• The Cambrian explosion

• The emergence of multicellular life

• The formation of the Moon

• The break-up of supercontinent Rodinia