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History in Rocks
Geological Time Scale
Origin of Life
A Trip Through Geological Time
Vocabulary Review
100
A fossil is any indirect evidence left by an animal and may inculde a footprint, a trial or a burrow
What is a trace fossil?
100
About 4.6 billion years ago
When was the Earth formed?
100
Idea that nonliving material can produce life.
What is spontaneous generation?
100
Prokaryotes formed during this time around 3500 Million years ago.
What is the Precambrian?
100
Evidence of an organism that lived long ago.
What is a fossil
200
A scientists who studies ancient life
What is a paleontologist?
200
The first large section in the geological time scale
What is the Precambrian?
200
Italian physician who disproved spontaneous generation by his expierment with flies and meat.
Who is Francesco Redi?
200
The frist amphibians appeard druing this ear in the Devonian period around 417 mya.
What is the Paleozoic Era?
200
The idea that living organisms come only from other living organisms
What is biogenesis?
300
An entire organism was quickly trapped in ice or tree sap that hardened into amber
What is amber-preserved or frozen fossils?
300
Divided into 6 periods this era is know as the "Cambrian explosion"
What is the Paleozoic Era?
300
This experiment disproved spontaneous generation using s shaped test tubes, broth and microorganisms.
What is Pasteur's experiment?
300
Mammals became dominat during this era around 65 million years ago.
What is the Cenozoic Era?
300
The idea that nonliving material can produce life
What is spontaneous generation?
400
When minerals penetrate and replace the hard parts of an organism
What is a petrified fossil?
400
The first dinosaurs and mamals appeared during this era
What is the Mesozoic Era
400
A large ordered structure, enclosed by a membrane, that carries out some life activities, such as growth and division
What is a protocell?
400
The largest mass extinction recorded removed 70-90% of all species following this era
What is the Paleozoic Era.
400
Prokaryotes that live in harsh environments.
What is archaebacteria?
500
An organism is buried in sediment and then dacays, leaving an empty space.
What is a mold?
500
The era which we are currently in.
What is the Cenozoic Era?
500
These are prokaryotic and live in harsh environments, such as deep sea vents and hot springs.
What are Archaebacteria?
500
The dinosaurs became extinct after a mass extinction 65 million years ago follow this era.
What is the Mesozoic Era?
500
Theory for how the continents move
What is plate tectonics?