Inventors Who Changed the World

The video highlights the achievements of various inventors who changed the world. Cai Lun invented paper, Johannes Gutenberg created the printing press, and Leonardo da Vinci designed machines ahead of his time. Thomas Edison developed the light bulb, Louis Pasteur discovered germs and vaccines, and Marie Curie found radium. The Wright brothers invented the airplane, and Grace Murray Hopper advanced computer programming. These pioneers' innovations have had a lasting impact on society.

What materials did Cai Lun use to create the first piece of paper?

• Bamboo and silk

• Bark, old rags, and fishing nets

• Wool and cotton

• Leaves and clay

What was Johannes Gutenberg's major contribution to the world?

• Discovering electricity

• Developing the steam engine

• Creating the first printing press

• Inventing the telescope

Which of the following machines did Leonardo da Vinci draw plans for?

• Car

• Rocket

• Submarine

• Airplane

What was Thomas Edison's significant invention related to lighting?

• Candle

• Gas lamp

• Light bulb

• Torch

What did Louis Pasteur discover that was crucial to understanding diseases?

• Germs

• Viruses

• Bacteria

• Antibiotics

What element did Marie Curie discover that was used in cancer treatment?

• Thorium

• Uranium

• Radium

• Plutonium

What did the Wright brothers achieve in 1903?

• Building the first submarine

• Inventing the car

• Flying the first airplane

• Creating the first computer