WONDER #2700: Why Would You Take a Canary Into a Coal Mine?

Question 1 of 3

What was the main idea of this Wonder?

1. Carbon monoxide is an odorless, toxic gas that can harm or even kill humans and animals.
2. Coal mining can be a dangerous job, and it’s important for miners to take steps to protect themselves.
3. An idiom is a commonly used phrase that has a deeper meaning than the literal definition of its words.
4. 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 _______.

1. 1845
2. 1964
3. 1911
4. 2013

Question 3 of 3

Since 1986, _______________ have replaced canaries in coal mines.

1. digital CO detectors
2. mice
3. smoke detectors
4. horses

Check your answers online at https://wonderopolis.org/wonder/Why-Would-You-Take-a-Canary-Into-a-Coal-Mine.