Where Did We Come From Flashcards
What is the Panspermia theory
Life could spread from planet to planet or from stellar system to stellar system, carried on meteors.
Biochemical theory
Life come from a series of biochemical reactions
How has technology allowed us to understand the origin of the universe
As technology evolved we could see the past of the universe through looking at radiation, and using other planets
Definition of evolution
The gradual development of something
What is a fossil
A once living organism that is at least 10 000 years old
How to make a fossil
Petrified
Carbon films
Moulds and cast
How does a fossil get petrified
Minerals replace the organism
How are carbon films made
The organism breaks down leaving only carbon
How are casts made
Casts are created when an organism is buried in sediment and disolves away leaving a cast
How are mould made
Moulds form when sediment fills a cast and sets which creates a mould
What Is carbon 14 dating
A way of determining the age of something up to about 50000 years old using the isotope carbon 14
