Kids' Curious Questions Answered: Why Mars is Red and Hedgehog Spikes
Kids' Science Quiz: Why Mars is Red & Hedgehog Spikes

Ever been stumped by a child's surprisingly complex question about the world? A recent quiz designed for young minds tackles some of the best, answering everything from planetary science to wildlife wonders.

Unravelling Planetary Mysteries

The quiz, featured in a weekend family section, kicks off with a cosmic conundrum. Why is Mars red if it's so cold? The answer lies not in temperature, but in chemistry. Mars gets its distinctive rusty colour from iron oxide – essentially, the planet is covered in a fine dust of rust. This process happened billions of years ago when iron on the surface reacted with a thin atmosphere that has since mostly disappeared, leaving the cold, arid world we see today.

Another astronomical query asked why we can sometimes see the moon during the day. This phenomenon occurs because the moon is bright enough and close enough to Earth to be visible in our daytime sky, depending on its phase and position relative to the sun.

Decoding Animal Antics

The quiz then turned its attention to the animal kingdom, starting with a prickly subject. Do a hedgehog's spikes fall out? The answer is yes, but not all at once like hair loss. Hedgehogs undergo a process called "quilling," similar to how children lose baby teeth. Young hedgehogs shed their smaller, first set of spines for a larger, adult set. Adults also gradually lose and replace spines throughout their lives.

Another creature feature explored why woodlice are often found in clusters. This behaviour, known as aggregation, is primarily for moisture conservation. Woodlice have gills and dry out easily, so huddling together reduces water loss for the whole group.

Everyday Science Explained

The questions also covered more familiar ground, like the purpose of the small hole in a pen lid. This is a crucial safety feature designed to allow air to pass through if the lid is accidentally swallowed, reducing the risk of choking.

Finally, the quiz addressed a common childhood observation: why parents might say it's bedtime when it's still light outside during British Summer Time. This clever answer highlights the difference between clock time, which humans create and adjust, and solar time, which is based on the sun's position. The clocks spring forward, but the sun's schedule doesn't change, leading to those confusingly bright evenings.

This engaging collection of questions and answers serves as a delightful reminder of the endless curiosity of children and the fascinating science behind everyday observations, making learning fun for the whole family.