Book 21, Question 50
How Can You Sort a Mystery Pile of Objects with Only a Magnet?
You have a mystery pile of small objects, and only a magnet to sort them. A magnet is a great tool for splitting any pile into two groups.
More fun facts
- Recycling plants are called materials recovery facilities.
- Machines there sort recycling using the different properties of materials.
- Magnets pull out metal objects that contain iron.
- Blowing air separates light paper and cardboard from heavier glass and cans.
- In class, students can use a magnet to sort objects into magnetic and nonmagnetic piles.
- A stronger magnet can pull a paper clip from farther away.
Sources: Scientific American, BBC, BBC
Questions kids ask
How can you test which magnet is strongest?
See which one attracts a paper clip from the greatest distance.