What is an invention?
A new creation.
A plagiarism.
Who created the first long-lasting light bulb?
Thomas Edison
Galileo Galilei
Alexander Graham Bell
Thomas Watson
Who invented a computer?
Thomas Watson
Hans Lippershey
Charles Babbage
Cai Lun
Who invented the first telescope?
Neil Armstrong
Hans Lippershey
Alexander Graham Bell
Galileo Galilei
Who was the first to aim a telescope to the sky?
Galileo Galilei
Hans Lippershey
Charles Babbage
Wright Brothers
Who invented papers?
Cai Lun
Charles Babbage
Who invented the first engine-powered glider?
Abbas Ibn Firnas
Hans Lippershey
Montgolfier Brothers
Wright Brothers
Why did Wright Brothers build their own engine?
There was no such powerful engine available.
The engine was too expensive.
What gas that lifts up an airship to the sky?
Krypton
Oxygen
Hydrogen
Helium
What is the object that casts a shadow on the dial of a sundial?
gnomon
dial
A sundial/shadow clock can be useful in
sunny days
rainy days
stormy days
cloudy days
What is NOT a timekeeping device back in the older days?
smartwatch
water clock
candle clock
sundial/shadow clock
Who discovered the law of pendulum?
Charles Babbage
Thomas Watson
Montgolfier Brothers
Galileo Galilei
