How The World Started Flashcards
What was the first substance formed after the creation of the earth
Quarks
What are quarks
Quarks are what make up atoms
What is the process when a star converts hydrogen to helium called
Birth of a star
Name two things that could happen if a star runs out of fuel
Super nova, white dwarf
According to the Big Bang theory how long ago did the expansion take place
13.75 billion years ago
Name the two elements that were formed when the earth began to cool
Hydrogen and helium
What is the difference between a prokaryotic cell and a eukaryotic cell?
Eukaryotic cells have organals and are membrane bound
Prokaryotic cells do not have organals
Define prokaryotic
Prokaryotic cells do not have a cell nucleus
Define eukaryotic cell
An organism that contains a nucleus and other organals enclosed in membranes
Define amphibian
A cold blooded vertebrate animal
Define K-T boundary
The transition between Cretaceous and tertiary periods of geologic time
Define Australopithecus
A fossil found with both ape like and human characteristics that was found in Africa
Define homo erectus
An extinct species of hominin
Define homo sapien
The species of human beings that exist today
What are the basic ingredients everything is made up of
Carbon
Hydrogen
Helium
