National Science Education Standards
Science As Inquiry
Earth and Space Science
Unifying Concepts & ProcessThemes
Abilities necessary to do scientific inquiry
dentify questions and concepts that guide scientific investigations.
The Origin and Evolution of the Universe
Evidence, models, and explanation
Evolution and equilibrium
FFS - Facts for Students
The sun, the earth, and the rest of the solar system formed from a nebular cloud of dust and gas 4.6 billion years ago. The early earth was very different from the planet we live on today.
Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium. These and other processes in stars have led to the formation of all the other elements.
Go back to