Early Earth History

Little is known about much of Earth’s early history because ____.

• Precambrian rocks have been deeply buried

• Precambrian rocks have been changed by heat and pressure

• Precambrian soft-bodied life-forms weren’t often preserved as fossils

• all of the above

Tags

NGSS.HS-ESS1-6

The Precambrian time period is the largest on the geological time scale.

• True

• False

Tags

NGSS.MS-ESS1-4

The geological time scale is divided up and organized according to what life forms existed on earth.

• True

• False

Tags

NGSS.MS-ESS1-4

The development of ____ factored in the development of complex organisms.

• Ozone

• Oxygen

• Cyanobacteria

• All of the above

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5

What system of Earth were the first life forms theorized to be living in?

• Lithosphere

• Hydrosphere

• Geosphere

• Atmosphere

Tags

NGSS.MS-ESS2-4

Earth’s earliest atmosphere lacked which gas that is necessary for life as we know it to exist today?

• nitrogen

• oxygen

• carbon dioxide

• argon

What types of eukaryotes existed in early Earth?

• Unicellular

• Multicellular

Tags

NGSS.MS-LS1-1

A life-form in the Precambrian time was ____.

• cyanobacteria

• humans

• reptiles

• dinosaurs

Tags

NGSS.MS-LS4-1

The Precambrian time period is segmented into very few parts because:

• the fossil record is scarce

• cyanobacteria were the only life form

• volcanic activity ruined the fossil record

• life did not exist

Tags

NGSS.MS-LS4-1

What time period lasted for more than half of the hypothesized history of the Earth?

• Carboniferous

• Precambrian

• Paleozoic

• Cretaceous

Tags

NGSS.MS-ESS1-4