Module: The Big Bang Theory
DCI: ESS1.A (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 gasses, and of the maps of spectra of the primordial radiation
(cosmic microwave background) that still fills the universe.
PE: HS-ESS1-2 Construct an explanation of the Big Bang theory based
on astronomical evidence of light spectra, motion of distant galaxies, and
composition of matter in the universe.
[Clarification
Statement: Emphasis is on the astronomical evidence of the red shift of light
from galaxies as an indication that the universe is currently expanding, the
cosmic microwave background as the remnant radiation from the Big Bang, and the
observed composition of ordinary matter of the universe, primarily found in
stars and interstellar gases (from the spectra of electromagnetic radiation
from stars), which matches that predicted by the Big Bang theory (3/4 hydrogen
and 1/4 helium).]
The ideas are:
- the big bang theory is supported by the following types of evidence
- distant galaxies receding from our own
- measured composition of stars and non-stellar gases
- maps of spectra of radiation that fills the universe
Students should understand all of the evidence and be able to correlate that evidence to its support for the big bang theory.
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