Mary has nobody to talk with.
talk
Something new that someone thinks up and creates
invention
What left Edison hard of hearing?
Scarlet fever left Edison hard of hearing.
Cross the road.
cross
A test that helps scientists answer their questions
experiment
What was Edison's first job?
His first job was selling newspapers.
We have been having awful weather.
awful
a place where scientists work and do experiments
laboratory
What did Edison set up in the baggage car of the train?
Edison set up a laboratory in the baggage car of the train.
That's against the law.
law
A very smart person
genius
What happened to Edison's train laboratory?
His laboratory burst into flames.
Clean the window with a damp cloth.
cloth
a small machine or tool that is useful
gadget
What was Edison's first patented invention?
His first patented invention was the Electrical Vote Recorder.