The Inventor’s Secret Crossword
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
 
 
Down: 1) A complete failure2) Small, specialized machines or electronic devices3) Giving off a lot of light5) When something works in a rough or uneven way and makes popping noises7) In an engine, it takes in gas to make other parts move Across: 4) A machine that plays recorded music or sound6) Legal documents for an invention so no one else is allowed to make or sell it7) When a machine is moving slowly and noisily8) The engines that make a train go forward
 

 

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