Science Riddle Crossword Puzzle
Science Riddle crossword puzzle printable. Download, print and start playing. You can add your own words to customize or start creating from scratch.
Recommended: Check out this Advance Crossmaker Maker to create commercial use printable puzzles.
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Words List(answer : question or clue)
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![Science Riddle Crossword Puzzle](https://printablecreative.com/resources/crossword/preview/2023/02/science-riddle_69865085.jpg)
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QUESTIONS LIST: echo: many have heard it, but nobody has ever seen it. it will not speak back unless spoken to. what is it?, supernova: i was once a massive star and soon i will be a brightly colored gas cloud. for now, i am a massive explosion. what am i?, energy: it is impossible for me to be created, and i can never be destroyed, i can only change form. what am i?, lead: what chemical element doesn't like to follow? , charcoal: what is black when you buy it, red when you use it, and gray when you throw it away?, foetus: i was once an embryo but have now gone through eight weeks of development. what am i?, carbondioxide: i am a gas that helps plants but cannot be bought at the gas station. what am i? , breath: what can you hold no longer than a few seconds?