History of the Earth Part 1:Hadean, Archean, and Proterozoic Eon

What is the name of the eon when Earth was frequently hit by asteroids?

• Phanerozoic

• Hadean

• Proterozoic

• Archean

What major event happened about 4.4 billion years ago involving a protoplanet named Theia?

• Start of the Ice Age

• First appearance of oxygen

• Creation of the first continent

• Formation of the Moon

What are stromatolites?

• Microbial mats formed by cyanobacteria

• Types of ancient fish

• Large continents

• Early forms of plants

What caused the formation of large continents during the Archean eon?

• Accretion of microcontinents

• Meteor impacts

• Volcanic eruptions

• Rising sea levels

What event led to a significant increase in Earth's oxygen levels?

• The Great Oxidation Event

• Formation of the Moon

• The Cambrian Explosion

• The Ice Age

What were the first multicellular life forms to appear on Earth?

• Trilobites

• Dinosaurs

• Amphibians

• Ediacara Fauna

What was the name of the first supercontinent?

• Gondwana

• Rodinia

• Pangaea

• Nuna

What major climate event occurred due to the movement of a large chunk of a supercontinent over the south pole?

• The Big Freeze

• Snowball Earth

• Global warming

• The Great Drying

What does the term 'Cambrian Explosion' refer to?

• A meteor impact

• The breakup of a supercontinent

• A volcanic event

• A rapid diversification of life

Which eon are we currently living in?

• Proterozoic

• Phanerozoic

• Archean

• Hadean