Earth and Space

Knowledge and Skills Statement

Earth and space. The student describes the characteristics of the universe and the relative scale of its components.
Glossary terms and definitions are consistent across kindergarten through high school in the TEKS Guide. The definitions are intended to give educators a common understanding of the terms regardless of what grade level they teach. Glossary definitions are not intended for use with students.

a seven stage cycle that all stars follow: nebula, protostar, T-tauri phase, main sequence, red giant, fusion of heavier elements, supernovae or dwarf, and planetary nebula

Research

Riddle, Bob. “Star Chart.” Science Scope 41, no. 4 (2017): 96–99. http://www.jstor.org/stable/26387296

Summary: "Star Chart" explains how the Hertzsprung-Russell (HR) diagram shows the relationship between a star's luminosity and the spectral type (size and color). This article supports the teacher's understanding of the HR diagram.