Exploring the Geologic Time Scale

How old is the Earth according to geologists?

• 460 million years

• 4.6 billion years

• 46 billion years

• 4.6 million years

Tags

NGSS.MS-ESS1-4

What is the smallest division of geologic time?

• Eon

• Period

• Epoch

• Era

Tags

NGSS.MS-ESS1-4

What major event occurred during the Hadean eon?

• Emergence of mammals

• Development of multicellular life

• Appearance of dinosaurs

• Formation of the moon

Tags

NGSS.HS-ESS1-6

During which eon did life begin to form in the oceans?

• Proterozoic

• Hadean

• Phanerozoic

• Archean

What does 'Proterozoic' imply about the life forms of that time?

• Simple and small life forms

• Visible life forms

• Life forms capable of photosynthesis

• Complex multicellular life

Which eon is directly before the Phanerozoic?

• Mesozoic

• Hadean

• Archean

• Proterozoic

Which era is known as the age of dinosaurs?

• Cenozoic

• Mesozoic

• Proterozoic

• Paleozoic

Based on your notes, what ended the Mesozoic era?

• A volcanic eruption

• A giant asteroid

• An ice age

• A massive earthquake

What type of life dominates the Cenozoic era?

• Aquatic life

• Mammalian life

• Amphibian life

• Reptilian life

What significant change do humans bring about, marking the Anthropocene?

• Massive urbanization

• Discovery of fire

• Development of agriculture

• Significant alteration of Earth's geology and ecosystems

Tags

NGSS.MS-ESS3-4