WONDER #1615: How Do CDs Work?

Question 1 of 3

What does CD stand for?

1. compact disc
2. crucial data
3. convertible data
4. circular disc

Question 2 of 3

Most of a CD consists of a tough plastic called what?

1. tupperware
2. aluminum
3. lacquer
4. polycarbonate

Question 3 of 3

CDs contain a thin layer of which metal?

1. hydrogen
2. iron
3. aluminum
4. manganese

Check your answers online at https://wonderopolis.org/wonder/how-do-cds-work.