WorksheetsGeology - Precambrian Summary
Total questions: 14
Worksheet time: 14mins
Photosynthesis uses carbon dioxide and nutrients in the presence of sunlight to create
food energy and ozone.
chloroplasts and ozone.
food energy and oxygen.
life.
Which of the following is the correct order of ages in geologic time?
Eon > Era > Period > Epoch
Era > Period > Eon > Epoch
Epoch > Era > Eon > Period
Period > Eon > Era > Epoch
What is the first EON on on the Geologic Time Scale (GTS)
Hadeon
Archean
Precambrian
Cambrian
Earth's water was brought in the form of "hydrates" from
Comets & Asteroids
Solar Flares
The Moon
Smurfs
Time of intense impacts during the Precambrian Eon roughly 4 bya.
Impact Period
Heavy Bombardment Period
Hydration Period
Which rock type was NOT part of Earth's early continents?
Chert
Basalt
Granite
sandstone
Earth's early atmosphere was primarily composed of what compound?
Oxygen
Argon
Nitrogen
Carbon Dioxide
The first type of life found on earth.
Plants
Cyanobacteria
Red Algae
Polar Bears
There has only been one supercontinent and is named Pangaea.
True
False
The presence of ___________ in the atmosphere means the atmosphere was much ________than today.
Oxygen, Warmer
Nitrogen, cooler
Carbon Dioxide, Warmer
Carbon Dioxide, Cooler
The buildup of oxygen and the first eukaryotes occurred in the _______eon.
Hadean
Archaen
Proterozoic
Phanerozoic
Snowball Earth was a result of many things, but one main component was the rise in ______
Carbon Dioxide
Oxygen
Water levels
Fire life on Earth was prokaryotes, which is
Single-Celled Organisms
Multicellular Organisms
