How does salt make ice less slippery and why do bubbles pop? These are just two of the five multiple-choice questions in a new kids' quiz designed to test your knowledge. The questions have been set by children themselves, offering a fresh and engaging perspective on everyday phenomena.
The Science Behind Salt and Ice
Salt lowers the freezing point of water, causing ice to melt at lower temperatures. When salt is applied to icy surfaces, it creates a brine layer that prevents ice from forming a solid, slippery surface. This is why salt is commonly used on roads and pavements during winter to improve traction.
Why Bubbles Pop
Bubbles pop due to a combination of gravity and evaporation. The liquid film that forms a bubble is thin and fragile. Over time, the liquid drains downwards, making the top of the bubble even thinner. Eventually, the film becomes too thin to hold its shape, and the bubble bursts.
Submit Your Own Questions
Readers are invited to submit their own junior brainteasers for future quizzes. This initiative encourages children to think creatively and engage with science and trivia in a fun, interactive way.
Molly Oldfield hosts Everything Under the Sun, a podcast answering children's questions. Check out her books, including Everything Under the Sun and Everything Under the Sun: Quiz Book, as well as her new title, Everything Under the Sun: All Around the World.
Quiz Details
- Five multiple-choice questions
- Set by children
- Test your knowledge on various topics
- Chance to submit your own questions
Explore more on these topics: Family, The kids' quiz, Quiz and trivia games.
