by Callie Oliver | Jan 7, 2019
(HS.PS3D.c) Nuclear fusion processes in the center of the sun release the energy that ultimately reaches Earth as radiation.
by Callie Oliver | Jan 7, 2019
(HS.ESS1A.c) The Big Bang theory is supported by observations of distant galaxies receding from our own, of the measured composition of stars and non-stellar gases, and of the maps of spectra of the primordial radiation (cosmic microwave background) that still fills...
by Callie Oliver | Jan 7, 2019
(HS.ESS1A.a) All stars, such as our sun, are evolving. The star called Sol, our sun, will burn out over a lifespan of approximately 10 billion years.
by Callie Oliver | Jan 7, 2019
(HS.PS3B.e) Uncontrolled systems always evolve toward more stable states–that is, toward more uniform energy distribution (e.g., water flows downhill, objects hotter than their surrounding environment cool down).
by Callie Oliver | Jan 7, 2019
(HS.PS3A.b) At the macroscopic scale, energy manifests itself in multiple ways, such as in motion, sound, light, and thermal energy.
