Why Iron Rusts — Questions and answers

Read the full story

What did Sara notice about a part of the Golden Gate Bridge?

Choices

  1. It was shiny and new.
  2. It was crumbly and orange. ✓
  3. It was made of soft fabric.
  4. It was painted bright blue.

Answer: It was crumbly and orange.

From page 1

What did Antoine Lavoisier believe was the key to understanding the world?

Choices

  1. Asking many questions
  2. Precise measurement ✓
  3. Reading lots of books
  4. Traveling to different countries

Answer: Precise measurement

From page 4

What did Lavoisier use to find the exact weight of the iron?

Choices

  1. A simple ruler
  2. A hyper-accurate scale ✓
  3. His hands
  4. A small measuring cup

Answer: A hyper-accurate scale

From page 5

What stunning discovery did Lavoisier make after rusting the iron?

Choices

  1. The iron disappeared completely.
  2. The rusted iron was lighter.
  3. The rusted iron was heavier. ✓
  4. The iron turned into wood.

Answer: The rusted iron was heavier.

From page 6

Why does the Golden Gate Bridge have a permanent team of painters working all year round?

Choices

  1. To make it look pretty for tourists.
  2. To protect the bridge from rusting. ✓
  3. To change its color every season.
  4. To help people find their way across.

Answer: To protect the bridge from rusting.

From page 8