Today’s Wonder of the Day was inspired by Hunter. Hunter Wonders, “When will we make a hoverboard like in Back to the Future 2?” Thanks for WONDERing with us, Hunter!

Do you ever daydream about the future? Could there be cars without drivers? Trucks that fly? Boats driving on land and water?



You may already know about self-driving cars and hovercrafts. But what about hoverboards? Picture it: You're flying down the sidewalk on an object that looks like a skateboard without wheels! You turn a corner, swerve around other people, and get home from school in record time, without ever touching the ground!

Does this sound like science fiction? Think again! Hoverboards are already a reality.

But how do hoverboards work?

The "hoverboards" some of your friends are already riding are self-balancing scooters. These scooters don't hover above the ground. Instead, they use two wheels to get around.

Okay, so why are they called HOVERboards? People call self-balancing scooters "hoverboards" because of the sensors that help them stay balanced. The board's sensors find out which way the rider is leaning. They then tell the board's motor how fast and in what direction to spin. That's how this "hoverboard" stays balanced!

If you're not satisfied with a self-balancing scooter, have no fear! Hoverboards with no wheels are coming soon. And they'll float on their own!

Hoverboards that float above the ground will use the science of magnets. They will have hover engines. Hover engines contain electrically charged magnets, or electromagnets. The electromagnets work with an inductor to create a powerful magnetic field. When the magnetic field is strong enough, the board will float in the air!

Do you see a future of hoverboards zooming through the streets? Or do you imagine even better ways of getting around? Anything is possible!

Wonder What's Next?

Tomorrow’s Wonder of the Day is such a well-kept secret, you might even say it's “underground”!