![The QUEST for QUIET, QUICK PLANES](https://cdn.magzter.com/1441816897/1697173953/articles/229C43XkQ1697277290646/THE-QUEST-FOR-QUIET-QUICK-PLANES.jpg)
BA-BAM! Whoa. The deep, loud sounds startle you. You feel a sudden jolt, and the whole house seems to rattle.
Whatever it was seemed to come from above, but what was it? Thunder? Not a chance-the sky couldn't be more cornflower-blue. Then you notice a jet, flying so high it's a mere white speck. You might not believe it, but that tiny blip caused the rattling booms. Soon, however, these shocking airplane noises may become sound relics, thanks to cutting-edge research.
Creating Thunder in the Sky
When an object moves through air, it pushes against the molecules in front of it. This compressed zone of air ripples out in all directions at the speed of sound. The zone is called a pressure wave. While the object travels slower than sound, the ripples of the pressure waves stay smooth. They flow away from the object before it reaches them.
But problems begin once the object zooms faster than sound, or at supersonic speeds. Now the object is traveling faster than its pressure waves. All the ripples in front get squished together, forming a cone-shaped shock wave.
An airplane that goes supersonic produces many shock waves from tip to tail. By the time they reach you on the ground, though, most have merged into two. One shock wave is from all the aircraft's front-end parts. The other is from those at the rear. When each shock wave reaches you, your ears feel a change in pressure. This change-one or two pounds per square foot is actually rather small. It's what you feel when riding an elevator down a couple floors. But because the change occurs in a fraction of second, you end up hearing a thunder-like double clap. These are sonic booms.
Denne historien er fra November/December 2023-utgaven av Muse Science Magazine for Kids.
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Denne historien er fra November/December 2023-utgaven av Muse Science Magazine for Kids.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
![Who's Your Cousin?](https://reseuro.magzter.com/100x125/articles/11355/1633847/ASHqA7muv1710505048312/crp_Great-apes-Chimpanzee-Gorilla.jpg)
Who's Your Cousin?
The great apes are among the most popular animals in most zoos. Their actions, facial expressions, and family life remind us so much of ourselves. Have you ever wondered, though, how we might look to them?
![Is it possible to die of boredom?](https://reseuro.magzter.com/100x125/articles/11355/1633847/ZzB-iZQgF1710508711802/IS-IT-POSSIBLE-TO-DIE-OF-BOREDOM.jpg)
Is it possible to die of boredom?
To figure out if we can die of boredom, we first have to understand what boredom is. For help, we called James Danckert, a psychologist who studies boredom at the University of Waterloo in Canada.
![THE PROBLEM WITH PALM OIL](https://reseuro.magzter.com/100x125/articles/11355/1633847/NE6B5peNi1710508405429/THE-PROBLEM-WITH-PALM-OIL.jpg)
THE PROBLEM WITH PALM OIL
Palm oil is all around you. It’s in sugary snacks like cookies and candy bars. It’s in lipstick and shampoo and pet food.
![SERGE WICH](https://reseuro.magzter.com/100x125/articles/11355/1633847/-jLx5_Ovb1710508082294/SERGE-WICH.jpg)
SERGE WICH
Serge Wich’s favorite days at work are spent out in the forest, studying orangutans in Sumatra and Borneo or chimpanzees in Tanzania.
![ELODIE FREYMANN](https://reseuro.magzter.com/100x125/articles/11355/1633847/rxYkBeZAq1710507644261/ELODIE-FREYMANN.jpg)
ELODIE FREYMANN
When you’re feeling sick, it probably doesn’t occur to you to try eating tree bark.
![Guardians of the Forest](https://reseuro.magzter.com/100x125/articles/11355/1633847/3EFkZEWa51710506719598/GUARDIANS-OF-THE-FOREST.jpg)
Guardians of the Forest
EARLY, MAKESHIFT WILDLIFE DRONES HELPED TO DETECT AND PROTECT ORANGUTANS.
![APE ANTICS](https://reseuro.magzter.com/100x125/articles/11355/1633847/oR6tFGQgh1710507151473/APE-ANTICS.jpg)
APE ANTICS
The Whirling World of primate play
![Dr. Ape Will See You Now](https://reseuro.magzter.com/100x125/articles/11355/1633847/Mp7BNzq0N1710506413948/DR-APE-WILL-SEE-YOU-NOW.jpg)
Dr. Ape Will See You Now
HUMANS AREN’T THE ONLY PRIMATES THAT USE MEDICATION.
![THE LEFT OVERS](https://reseuro.magzter.com/100x125/articles/11355/1633847/R-dA4gR5q1710505795587/THE-LEFT-OVERS.jpg)
THE LEFT OVERS
A lot has happened for modern humans to get to this point. We lost most of our hair, learned how to make tools, established civilizations, sent a person to the Moon, and invented artificial intelligence. Whew! With all of these changes, our bodies have changed, too. It’s only taken us about six million years.
![SO, WHAT IS A PRIMATE?](https://reseuro.magzter.com/100x125/articles/11355/1633847/adJ6Z9jpO1710505380650/SO-WHAT-IS-A-PRIMATE.jpg)
SO, WHAT IS A PRIMATE?
What do you have in common with the aye-aye, sifaka, siamang, and potto? If you said your collarbone, you re probably a primatologist—a person who studies primates. If you’re not, read on.