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 at an accelerated rate, 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).
Note: this is a performance expectation for both HS Earth & Space Science and HS Physics. For physics, the focus is "connection to wavelength and frequency of light, formation of stars" as per the NYSED physics course map.
Resources
Examples and discussion of resources for the learning, teaching, and assessment of HS-ESS1-2.
Assessment
What assessment of HS-ESS1-2 might look like on a NY state exam.
NGSS Dimensions
Performance expectation HS-ESS1-2 was developed using the following elements from the NRC document A Framework for K-12 Science Education:
Connections to Other Standards
HS-ESS1-2 connections to ELA, math, and other science standards as outlined by the NYS Education Department: