The Pendulum's Secret — Questions and answers

Read the full story

What does Iris notice about the pendulum's movement?

Choices

  1. It's swinging very fast.
  2. It's swinging exactly like the ones at the Exploratorium.
  3. Its movement seems a little strange or "off". ✓
  4. It's not moving at all.

Answer: Its movement seems a little strange or "off".

From page 2

What happens to the pendulum's swing after Tao bumps it?

Choices

  1. It stops swinging completely.
  2. It starts swinging in a wild and messy way. ✓
  3. It swings more smoothly than before.
  4. It rings a loud bell.

Answer: It starts swinging in a wild and messy way.

From page 3

Who was Jean Foucault and what did he use a pendulum to prove?

Choices

  1. He was a sailor who used pendulums to navigate ships.
  2. He was a physicist who proved the Earth rotates. ✓
  3. He was an inventor who created the first compass.
  4. He was a scientist who discovered gravity.

Answer: He was a physicist who proved the Earth rotates.

From page 4