The large steam ________ hurdled down the tracks.
locomotive
Listen to the sound of that motorcycle's engine ______ powerfully!
chug
This top secret _____ is a shoe is that can function as a phone.
gadget
Edison's invention of the _______ allowed people to record sound for the first time!
phonograph
Moments after my jetpack began ______(ing), it rain out of fuel.
sputtering
The cat's attempt to jump onto the counter was a major _____!
flop
The _________ lightbulb becomes bright when heated by electricty.
incandescent
A soup can is a great example of a ______!
cylinder
A _______ is a document that proves an invention belongs to a particular person (and can't be stolen)!
patent
There's an electrical ______ running through these wires, so be careful!
current
