The Invention of the Toothbrush — Questions and answers

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What did the Invention Encyclopedia choose to visit the origins of this time?

Choices

  1. The origins of food.
  2. The origins of personal hygiene: the toothbrush! ✓
  3. The origins of glowing shells.
  4. The origins of ocean charts.

Answer: The origins of personal hygiene: the toothbrush!

From page 3

Who did Master Yu say had a quote about 'Simplicity is the ultimate sophistication'?

Choices

  1. Imani.
  2. Vivaan.
  3. Leonardo da Vinci. ✓
  4. Master Yu himself.

Answer: Leonardo da Vinci.

From page 6

What animal's bristles gave Master Yu the idea for a better tooth cleaner?

Choices

  1. A fish.
  2. A bird.
  3. A boar. ✓
  4. A cat.

Answer: A boar.

From page 7

In what year did Master Yu invent the bristle toothbrush?

Choices

  1. Many years in the future.
  2. 1498. ✓
  3. The year 2023.
  4. A long time ago, but no specific year.

Answer: 1498.

From page 8

What was Imani's modern toothbrush made of and powered by?

Choices

  1. Kelp noodles and algae.
  2. Twigs and boar bristles.
  3. Recycled ocean plastic and a bioluminescent battery. ✓
  4. Shimmering coral and glowing shells.

Answer: Recycled ocean plastic and a bioluminescent battery.

From page 10