Earth Science Quiz: Precambrian Time

What is the geological interval of the Precambrian time?

• It is the time overlapping with the Cambrian period.

• It is the time during the Cambrian period.

• It is the time after the Cambrian period.

• It is the time before the Cambrian period.

Which of the following is NOT a subdivision of Precambrian time?

• Proterozoic

• Hadean

• Paleozoic

• Archean

Which eon is known for the formation of the Earth's crust?

• Proterozoic

• Cambrian

• Archean

• Hadean

During which eon did the first simple life forms appear?

• Cambrian

• Hadean

• Proterozoic

• Archean

Which eon is characterized by the appearance of multicellular life?

• Hadean

• Archean

• Proterozoic

• Cambrian

Which eon is known for the emergence of the first photosynthetic organisms?

• Cambrian

• Proterozoic

• Archean

• Hadean

During which eon did the Earth's atmosphere begin to accumulate oxygen?

• Hadean

• Archean

• Proterozoic

• Cambrian

Which eon marks the end of the Precambrian time?

• Cambrian

• Proterozoic

• Hadean

• Archean

Which eon is known for the formation of the first continental landmasses?

• Cambrian

• Proterozoic

• Archean

• Hadean

During which eon did the first known glaciations occur?

• Cambrian

• Proterozoic

• Archean

• Hadean