What is an invention?
A new creation.
A plagiarism.
Who created the first long-lasting light bulb?
Thomas Edison
Galileo Galilei
Thomas Watson
Alexander Graham Bell
Who invented a computer?
Cai Lun
Hans Lippershey
Thomas Watson
Charles Babbage
Who invented the first telescope?
Galileo Galilei
Hans Lippershey
Neil Armstrong
Alexander Graham Bell
Who was the first to aim a telescope to the sky?
Hans Lippershey
Galileo Galilei
Charles Babbage
Wright Brothers
Who invented papers?
Charles Babbage
Cai Lun
Who invented the first engine-powered glider?
Montgolfier Brothers
Hans Lippershey
Wright Brothers
Abbas Ibn Firnas
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?
Oxygen
Helium
Krypton
Hydrogen
What is the object that casts a shadow on the dial of a sundial?
gnomon
dial
A sundial/shadow clock can be useful in
cloudy days
sunny days
rainy days
stormy days
What is NOT a timekeeping device back in the olden days?
sundial/shadow clock
water clock
candle clock
smartwatch
Who discovered the law of pendulum?
Montgolfier Brothers
Charles Babbage
Galileo Galilei
Thomas Watson
