Exploring Our Origins
The Big Bang
Birth of the universe
Birth of stars
Agrregation of stars forming galaxies
Creation of milky way
DNA
Genes
Chromosomes
Responsible for our traits
Encoding for proteins and traits
Heredity
Evolution
Natural Selection
Variation
Mutation
Survival of the fittest
Stars (our parents)
Formed of hydrogen and helium
Have a definite lifecycle
Nuclear reactions happemimg inside forming light and heat energy
When dying they explode forming complicated elements of life
Great explosions cause light and heat called supernova
On dying they form atoms that become parts of other nebula that form other stars forming galaxies.
Solar System
Formed 4.5 billion years ago
Formed of the sun and the 8 planets+pluto
Found inside milky way
Earth
Formed with the solar system 4.5 billion years ago
Life was impssible on early earth
Explosion and the atmosphere filled with poisnous gases
Elemnts of life were delivered to earth from outer space
Water was formed from volcanic sprays and comets from space
Unicelleluar organisms were formed which evolved into multicellilular organisms then humans
Origins of Life
Amino acids which are building units of proteins
DNA and RNA
Carbon, Hydrogen, and Helium