Deaf means...
not able to see
not able to hear, or not able to hear well
Experiment means....
a carefully planned test used to discover something unknown
a student who is in his or her first year at university
Telegraph means...
a system of sending messages by using wires and electricity
people in an organization having the highest and most import
Communicate means....
to express thoughts, feelings, or information to people
to make very little or no noise
Signal means...
a set of printed sheets of paper that are held together
electrical or sound waves that are sent or received
Invention means...
a situation in which someone becomes involved in a particula
the act or process of making or creating something new
More than 150 years ago, how did people keep in touch?
They used cell phones.
They used computers.
They could not contact one another.
They wrote letters.
Who invented the telephone?
Albert Einstein
Thomas Edison
Alexander Graham Bell
Steve Jobs
What were Bell’s interests?
He was interested in reading and writing.
He was interested in speech and hearing.
He was interested in painting and designing.
He was interested in buying and selling.
In the 1800s, what was the fastest way to communicate over long distances?
the Internet
text messages
the telephone
the telegraph
What did Bell find when he heard the sound of a spring being pulled?
He found that sound could not move.
He found that the wire blocked the sound.
He found that sound traveled over a long wire.
He found that the sound of a spring was strange.
What did Bell try to find out through his experiment?
how to make a strong wire
how to write messages quickly
how to use people for sending messages
how to send human voice over wire
Long ago, there were no ______.
telephones
telescopes
About 150 years ago, an inventor named Alexander Graham Bell ________ the telephone.
invented
collected
Bell was a teacher and he worked with ______ children.
blind
deaf
Bell did many _______ with sound and the human voice.
experiments
experiences
