Early Inventions

What inspired John Joseph Merlin to invent roller skates?

• He wanted to create a new mode of transportation

• He wanted to ice skate on dry land

• He wanted to impress people at a party

• He was trying to make a safer form of ice skating

What happened when Merlin first demonstrated his roller skates?

• He successfully skated across the room

• He showed them off at a public park

• He crashed into a mirror and hurt himself

• He impressed the guests with his skating skills

What major contribution did Seishu Hanaoka make to medicine?

• He developed a new type of surgery

• He invented general anesthesia

• He discovered a cure for cancer

• He introduced a new kind of surgical tool

What was the significance of Hanaoka’s use of general anesthesia?

• It allowed surgery without patients feeling pain

• It helped him operate faster

• It made surgery more dangerous

• It was only used for small operations

Who developed the idea of the tin can for food storage?

• Philippe de Girard

• Bryan Donkin

• Both Philippe de Girard and Bryan Donkin

• The Royal Navy

Why was the tin can initially invented?

• To store food for the Royal Navy

• To sell food to the public

• To keep food fresh during transportation

• To preserve medical supplies

What problem did Margaret Knight solve with her invention?

• Paper bags were too expensive to produce

• Paper bags couldn’t hold enough weight

• Paper bags were shaped like flat envelopes

• Paper bags tore too easily

What feature made Margaret Knight’s paper bags better?

• They were made of thicker paper

• They were cheaper to produce

• They had flat bottoms for easier storage

• They were stronger and more durable

Which invention was developed in the 1800s?

• Roller skates

• Flat-bottomed paper bag

• Tin can

• Both tin can and general anesthesia

What do all the inventors mentioned in the text have in common?

• They all worked in factories

• Their inventions are still used today

• They were all from Europe

• They all invented medical devices