Air Brake
Can Opener
Diesel Gas
Ear Plugs
Facebook
100
George Westlinghouse
Who invented the air brake?
100
Ezra Warner
Who invented the can opener?
100
Rudolf Diesel
Who invented diesel gas?
100
Ray and Cecilia Benner
Who invented ear plugs?
100
Mark Zuckerberg
Who invented Facebook?
200
New York, U.S.
Where was the air brake invented?
200
1858
When was the can opener invented?
200
1893
When was diesel gas invented?
200
It is unknown where ear plugs were invented.
Where were ear plugs invented?
200
2003
When was Facebook invented?
300
1846
When was the air brake invented?
300
Connecticut
Where was the can opener invented?
300
Augsburg, Germany
Where was diesel gas invented?
300
1962
When were ear plugs invented?
300
Zuckerberg was attending Harvard University so Massachusetts, U.S.
Where was Facebook invented?
400
It is a friction brake in which compressed air is used to apply pressure to the brake pad.
What is the air brake?
400
The original can opener was a bayonet and sickle shaped tool.
What is the can opener?
400
Diesel is fuel that does need spark to ignite.
What is diesel gas?
400
A disposable piece of foam.
What is an ear plug?
400
A social networking website.
What is Facebook?
500
It allowed for engineers to stop a train with fail-safe accuracy.
What was the purpose of inventing the air brake?
500
To open tin cans before you had to use a chisel and hammer and this made it a lot easier and safer.
Why was there a need for the invention of the can opener?
500
It is fuel efficient.
What is the purpose of diesel gas?
500
To protect people from harmful noise, cancel out annoying noise, and protect swimmers from water in their ears.
What is the purpose for ear plugs?
500
To connect with friends and socialize.
What is the purpose of Facebook?
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