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WorksheetsThe Paleozoic Era
Total questions: 13
Worksheet time: 7mins
Which Period of the Paleozoic Era is the longest and most diverse?
The Cambrian Period
The Permian Period
The Ordovician Period
The Devonian Period
Which picture shows the more diverse ecosystem?
During the Cambrian Explosion, there was a fast increase in diversity. What element can we credit for this increase of organisms?
Carbon
Oxygen
Hydrogen
Iron
Paleontologists, geologists, and other scientists organize important events and species in the correct time zone. What type of record is used to help with this?
The Fossil Record
The Diary
The Constitution
The Law of Superposition basically states that the rocks on the bottom layers are younger than rocks/sediment on the top layers.
True
False
What photosynthetic organism was responsible for increasing the oxygen levels in the environment in the Cambrian Period?
Phytoplankton
Zooplankton
Stromatolites
The closest organism that we have today to the first invertebrates are horseshoe crabs. What group of organisms are known as the first invertebrates to live on earth?
Trilobites
Stromatolites
Invertebrates
what Is a coal swamp?
A swamp that is all black and nasty looking
Is an oxygen-poor environment where,over time, plant material changes into coal.
A swamp filled with coal made out of devolved rocks.
The swamp where shrek lives
What's special about Amniote Eggs?
They have the ability to laid on land without drying out
They taste good
They are larger than regular eggs
They're not fertilized
Coal is formed when....
Dead plants go through intense heat and pressure
Dead animal fossils are clumped together
Water is dried out from the seas
Oxygen is mixed with iron
Marine animals are animals that are found..
In water
On land
Flying Around
Underground
Terrestrial animals are animals that are found..
In water
On land
Flying Around
Underground
