23.5: Beyond the Solar System- Challenge 1
- Page ID
- 6239
\( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)
- 1. Giant spheres of high temperature, glowing gas are ___.
- stars
- 2. Stars appear to move across the sky every night because ___.
- the earth rotates on its axis
- 3. The ancient ___ civilization created the Zodiac.
- Babylonian
- 4. ___ are natural fusion reactors.
- Stars
- 5. ___ keeps stars from collapsing under their own gravity.
- Fusion reactions
- 6. Nuclear fusion is the process by which ___.
- atoms join together and release a lot of energy
- 7. In the Hertzsprung-Russell Diagram, ___ is indicated on the y-axis.
- luminosity
- 8. The main sequence stars range from ___ to ___.
- large, blue stars; small, red stars
- 9. Zeta Ophiuchi is a ___ star.
- blue-colored
- 10. The Pillars of Creation are a ___ in the Eagle Nebula.
- stellar nursery
- 11. New stars form from ___ called ___.
- clouds of gas and dust; nebulae
- 12. ___ are stellar nurseries.
- Nebulae