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Invention Research

Across
Now you can take cell phones wherever you go, which means they are ______.
Who was the first person to mass-produce cars? (last name).
Alexander Graham Bell invented this.
Radio stations use ______ to send electromagnetic waves.
Phones send and receive electrical __________.
Cameras today use millions of small squares called _______ to make up the photos.
Down
Joseph Niepce and Louis Daguerre invented these
The invention of the radio changed communication because they did not need ______.
Each radio station has its own _____ used for sending signals.
Cars of the future could run on ________!
A camera is a lightproof box with a ________. This bends light as it comes into the box.