Precambrian Era

Longest part of Earth's history and includes the Hadean, Archean, and Proterozoic eons.

• Paleozoic

• Mesozoic

• Precambrian

• Cenozoic

Tags

NGSS.MS-ESS1-4

This was the longest part of Earth's history.

• Precambrian Time

• Paleozoic Era

Tags

NGSS.MS-ESS1-4

Very little is know about the organisms that lived during this time period because the rocks have been changed and there are not many fossils.

• Precambrian Time

• Paleozoic Era

Tags

NGSS.MS-LS4-1

This time period covers almost 4 billion years of Earth's history.

• Precambrian Time

• Paleozoic Era

Tags

NGSS.MS-ESS1-4

In the context of Earth's history, what are the four geological eras in order from OLDEST to NEWEST?

• Pre-Cambrian, Paleozoic, Mesozoic, Cenozoic

• Pre-Cambrian, Mesozoic, Paleozoic, Cenozoic

• Cenozoic, Mesozoic, Paleozoic, Pre-Cambrian

• Mesozoic, Pre-Cambrian, Cenozoic, Paleozoic

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

Claire would like to show that fossils provide evidence of how old Earth is. She knows that the fossil record can be used to deduce geologic time scales and present a record of Earth’s history. Which fossils match the Precambrian time period?

• flowers and dinosaurs

• bacteria and primitive marine plants

• coral reefs and amphibians

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Which of the following is a characteristic of the Precambrian Era?

• Dominance of dinosaurs

• Formation of the Earth

• First appearance of mammals

• First appearance of flowering plants

One of the most common Precambrian fossils are layered mounds of calcium carbonate called ....

• prokaryotes

• stromatolites

• trilobites

• chert

Tags

NGSS.MS-LS4-1

Use the geologic timescale.

Click on the region where the First Snowball Earth & The Great Oxygenation Event occur.

Tags

NGSS.HS-ESS2-1

NGSS.HS-ESS1-5

NGSS.HS-ESS2-2

NGSS.HS-ESS2-4

One hypothesis is that Earth was covered with ice about 700 million years ago.

• True

• False

Tags

NGSS.MS-ESS2-2