Bomb Debris
Puzzle 11 of Sci-fi Universe Medium Pack
Question is: Bomb Debris
and the answer is: SHRAPNEL
Word Meaning:
SHRAPNEL — (military, historical) An anti-personnel artillery shell used in World War I which carries a large number of individual bullets or balls close to the target and then ejects them to allow them to continue along the shell's trajectory and strike the target individually.
Definitions from Wiktionary.