Children’s / Teenage general interest: Science and technology

Your body goes through a cycle of five different stages when you sleep.

When you want to move, your brain sends a signal down your spinal cord.

Most humans only weigh a few pounds when they are born.

When you eat food, the muscles in your throat push it down a tube called the esophagus.

Nerve endings in your skin help you tell what something feels like.

Taste buds in your mouth tell your brain what flavor a food has.

Every smell you sense is made from tiny molecules floating in the air.

The center of your eye is known as the pupil.

Sound waves are a type of vibration in the air.

Did you know that the United States military has about 11,000 drones in service?

Did you know that social networking got its start in 1997?

Did you know that a device using smart technology has the ability to learn?

Did you know that in North America about 18 million vehicles are built with the help of robots each year?

Did you know that online gaming allows thousands of players to play within the same digital world at once?

Did you know that about 200 billion apps are downloaded worldwide each year?

Did you know that coding has been around longer than computers themselves?

Did you know that 3D printed objects are printed in slices that are fused together?

In the 1930s and 1940s, people raced each other in their own cars.

A sports car is typically a two-seat, two-door car with rear-wheel drive.

Indy cars are built for racing.

Hot rodding began as a way to bring new life to old cars.

Professional drag racing has four major classes.

¿Sabías que el cuerpo de un tanque se llama casco?

¿Sabías que la forma tubular del submarino lo ayudaa moverse más rápido por el agua?

¿Sabías que hay 15 tipos diferentes de Humvees?

¿Sabías que los helicópteros pueden volar hacia atrás?

¿Sabías que el motor de algunos cazas a reacciónpesa lo mismo que un auto?

¿Sabías que en la tripulación de los portaviones haydentistas y peluqueros?

Did you know that teeth come in many different shapes?

Did you know that stomach muscles are involuntary muscles?

Did you know the nose is part of the respiratory system?

Did you know that there are more than 600 muscles in your body?

Did you know that the left lung is smaller than the right lung?

Did you know that the heart is a muscle in the circulatory system?

Did you know that your eyes will continue to grow until you are a teenager?

Did you know that ears are a part of the auditory system?

Did you know that the brain is the third largest organ in the body?

Did you know that bones keep the organs inside our bodies safe?

Did you know that water covers about 70 percent of Earth's surface?

Did you know that rocks are sorted into three main groups?

Did you know that wood can be used to make paper?

Did you know that plastic will melt when it is heated to a very high temperature?

"e;Did you know that metal is found inside rocks?

Did you know that glass is made from sand?

Thoroughbreds are born ready to race.

Did you know that a submarine's tube-shaped body helps it move quickly through the water?

Did you know that there are 15 different kinds of Humvee?

Did you know that helicopters can fly backwards?

Did you know that some fighter jet engines weigh as much as cars?

Did you know that aircraft carrier crews include dentists and barbers?