WONDER #2700: Why Would You Take a Canary Into a Coal Mine?
Question 1 of 3
What was the main idea of this Wonder?
- Carbon monoxide is an odorless, toxic gas that can harm or even kill humans and animals.
- Coal mining can be a dangerous job, and it’s important for miners to take steps to protect themselves.
- An idiom is a commonly used phrase that has a deeper meaning than the literal definition of its words.
- For many years, miners carried canaries into coal mines with them to protect themselves from carbon monoxide.
Question 2 of 3
Miners began carrying canaries into coal mines in _______.
Question 3 of 3
Since 1986, _______________ have replaced canaries in coal mines.
- digital CO detectors
- smoke detectors
Check your answers online at https://www.wonderopolis.org/wonder/Why-Would-You-Take-a-Canary-Into-a-Coal-Mine.