Crossword Science Unit Review

This printable crossword puzzle on the topic of Astronomy & Space has 14 clues. Answers range from 4 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Forms the sun's outer atmosphere
The thin region below the sun's outer atmosphere
The outside layer of the sun that is visible from Earth
The region where gases circulate inside the sun
Where energy is generated by nuclear fusion coming out as electromagnetic radiation
The innermost and hottest region is the sun where nuclear fusion occurs
The thinnest and outermost layer of the Earth
The thickest layer of the earth composed of magnesium and iron
Surrounds it's inner part and consists of liquified nickel and iron
The center and hottest part of the Earth, consisting of solid nickel and iron
The youngest and hottest stage of a star's life and the center constantly gets hotter and consists of gas and dust
The second and longest stage of a star's life, consisting of gas and dust
The a star uses up all its energy so the center contracts and the outer part expands and cools
The last stage of a star's life and the leftover center of a red giant