What started Bell's interest in sound?
His mother became deaf.
When did Bell die?
1922
How many mobile phones are there in the world?
4 billion (4,000,000,000)
What is your favorite electronic gadget? Why?
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What jobs did Bell have?
scientist, inventor, engineer
How many people in the world own a mobile phone?
60% (sixty percent)
What began in 1877?
The Bell Telephone Company
What were the first words spoken on a telephone?
"Watson. Come here. I want to see you."
When did Bell start designing machines to transmit sound?
1863
How many people have a mobile phone in the UK?
85% (eighty-five percent)
How many people in the U.S. had phones in 1886?
150,000 (one hundred fifty thousand)
How often do you make phone calls? To who?
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How long did Bell continue to invent?
All his life
When was the first phone call?
10th March 1876
Who was Alexander Graham Bell's assistant?
Thomas Watson
In the 1870s, Bell started to develop a machine to transmit what?
the human voice
How many people in your family have a mobile phone? Why?
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How many landline phones are in the world?
approximately 1.27 billion (1,270,000,000)