What is Attention Deficit Hyperactivity Disorder (ADHD)?
Reading Time: < 1 minuteADHD is one of the most common neurodevelopmental disorders of childhood. It is usually first diagnosed in childhood and often lasts into adulthood. This disorder affects about 6% – 9% of children. However, about 60% of those children continue to have these symptoms as adults. Symptoms of ADHD tend to be noticed at an early age and may […]
How fast a flea can accelerate?
Reading Time: < 1 minuteFLEAS are reddish-brown tiny parasites that live on the exterior of the host. Fleas are blood-sucking insects being carriers of disease and could be serious pests. Fleas do not have wings but have flat bodies and strong legs, which allows them to jump long distances by using their hind legs to propel them. They travel […]
How does crying cause you to have a runny nose?
Reading Time: < 1 minuteEVERYONE has experienced it. You cried when you are sad and tears fell down your cheeks. But cry a little longer and you would have a runny nose too. This runny nose is not mucus, but it actually is tears that came from your eyes! So how does a tear get to your nose? Tears […]
Why does sound move faster in water than air?
Reading Time: < 1 minuteWe know that sound does not travel in outer space because the vacuum environment has no particles to carry the sound wave. This is because sound travels by particles bumping into each other as they vibrate. Therefore, sound can travel through solid, liquid, and gas. Sound waves travel four times faster in water than in the […]
How do penguins survive in saltwater?
Reading Time: < 1 minutePENGUINS are flightless marine birds that live below the equator. Though they are birds, penguins have flippers instead of wings. They cannot fly and on land, they waddle walking upright, though when snow conditions are right, they will slide on their bellies. They are known as expert swimmers and divers in the water. Many penguins […]