#378 What is & called and why?
What is & called and why? The symbol “&” is called the ampersand, which actually means “and, by itself, and”. It is […]
#377 What is a Scramjet?
What is a Scramjet? It is an air breathing jet engine that works at supersonic speeds. Right. There are three questions we […]
#376 How can paints be different colors?
How can paints be different colors? To make different colored paints, you need to add different materials for color pigments because different […]
#375 When did people start wearing wristwatches?
When did people start wearing wristwatches? People started wearing wristwatches during World War 1. Clocks had been around for some time before […]
#374 Why does a chicken’s head stay perfectly still when you move its body around?
Why does a chicken’s head stay perfectly still when you move its body around? Because chickens cannot move their eyeballs in their […]
#373 Does ABS reduce fatalities in car accidents?
Does ABS reduce fatalities in car accidents? Anti-lock braking systems (ABS) have made cars far safer, but they haven’t reduced fatal accidents […]
#372 How does a smoke detector work?
How does a smoke detector work? There are two different types of smoke detectors, and they respond to different types of fires. […]
#371 When did the last woolly mammoth disappear?
When did the last woolly mammoth disappear? A population of woolly mammoths survived on Wrangel Island until about 2000 BC, about 500 […]
#370 How long have humans been using rope?
How long have humans been using rope? Prehistoric man started using rope over 50,000 years ago. Rope is an incredibly important invention […]
#369 Why is New York called New York?
Why is New York called New York? New York is called New York because it was named in honor of the British […]